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It may not display this or other websites correctly.<br />You should upgrade or use an <a href="https://www.google.com/chrome/" target="_blank" rel="noopener">alternative browser</a>.</div> <div class="p-body-header"> <div class="p-title "> <h1 class="p-title-value">Search results for query: <a href="/search/607189/?searchform=1&q=%2A&c[users]=Nigel+Goodwin&o=date"><em>*</em></a></h1> </div> <div class="p-description"> <ul class="listInline listInline--bullet search-terms"> <li class="search-term term--users">Users: <a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li class="search-term term--search-order search-order--date">Order by date</li> </ul> </div> </div> <div class="p-body-main p-body-main--withSidebar "> <div class="p-body-contentCol"></div> <div class="p-body-sidebarCol"></div> <div class="p-body-content"> <div class="p-body-pageContent"> <div class="block" data-xf-init="" data-type="" data-href="/inline-mod/"> <div class="block-container"> <ol class="block-body"> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/heat-pump-control.167332/post-1460794">Heat Pump Control</a> </h3> <div class="contentRow-snippet">Most modern thermostats are wireless, and you can get them to either work with receivers built-in the boilers (usually a plug-in option on the boiler) or with a stand alone receiver - in your case a thermostat and stand alone receiver should do the job.</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #2</li> <li><time class="u-dt" dir="auto" datetime="2025-02-16T12:37:34-0800" data-time="1739738254" data-date-string="Feb 16, 2025" data-time-string="12:37 PM" title="Feb 16, 2025 at 12:37 PM">Yesterday at 12:37 PM</time></li> <li>Forum: <a href="/forums/electronic-projects-design-ideas-reviews/">Electronic Projects Design/Ideas/Reviews</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/voltage-divider-for-high-volt-measurement.167316/post-1460786">Voltage divider for high volt measurement</a> </h3> <div class="contentRow-snippet">It's obviously not an issue, it's already more than high enough, with a typical analogue meter been twice as high as a digital one.</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #24</li> <li><time class="u-dt" dir="auto" datetime="2025-02-16T11:11:39-0800" data-time="1739733099" data-date-string="Feb 16, 2025" data-time-string="11:11 AM" title="Feb 16, 2025 at 11:11 AM">Yesterday at 11:11 AM</time></li> <li>Forum: <a href="/forums/general-electronics-chat/">General Electronics Chat</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/voltage-divider-for-high-volt-measurement.167316/post-1460777">Voltage divider for high volt measurement</a> </h3> <div class="contentRow-snippet">Again, accuracy isn't important - and is even less so in this case :D As a young teenager I used to go beating (for pheasants) on a local landowners estate, and one place we used to have to beat through was a field of kale - now cows love kale (it's only suitable for cattle feed! :D ) - so...</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #20</li> <li><time class="u-dt" dir="auto" datetime="2025-02-16T06:14:40-0800" data-time="1739715280" data-date-string="Feb 16, 2025" data-time-string="6:14 AM" title="Feb 16, 2025 at 6:14 AM">Yesterday at 6:14 AM</time></li> <li>Forum: <a href="/forums/general-electronics-chat/">General Electronics Chat</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/will-this-circuit-fry-my-crystals.167323/post-1460773">Will this Circuit fry my Crystals?</a> </h3> <div class="contentRow-snippet">I agree, the main failure mode of crystals (as with my old friend) is over driving them, and the excessive mechanical movement cracks or damages the crystal wafer.</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #19</li> <li><time class="u-dt" dir="auto" datetime="2025-02-16T01:18:27-0800" data-time="1739697507" data-date-string="Feb 16, 2025" data-time-string="1:18 AM" title="Feb 16, 2025 at 1:18 AM">Yesterday at 1:18 AM</time></li> <li>Forum: <a href="/forums/radio-communications/">Radio and Communications</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/voltage-divider-for-high-volt-measurement.167316/post-1460772">Voltage divider for high volt measurement</a> </h3> <div class="contentRow-snippet">That looks quite similar to the Eagle one we had at work, as you (and I earlier) said, accuracy wasn't particularly important.</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #18</li> <li><time class="u-dt" dir="auto" datetime="2025-02-16T01:16:16-0800" data-time="1739697376" data-date-string="Feb 16, 2025" data-time-string="1:16 AM" title="Feb 16, 2025 at 1:16 AM">Yesterday at 1:16 AM</time></li> <li>Forum: <a href="/forums/general-electronics-chat/">General Electronics Chat</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/will-this-circuit-fry-my-crystals.167323/post-1460745">Will this Circuit fry my Crystals?</a> </h3> <div class="contentRow-snippet">A friend of mine did, years ago, and he killed multiple ones. He built a simple one valve AM medium wave radio transmitter, and cathode modulated it from a transistor audio amplifier via a transformer, he used a large pentode for the transmitter, I think it might have been an 807? - and ran a...</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #8</li> <li><time class="u-dt" dir="auto" datetime="2025-02-15T02:02:28-0800" data-time="1739613748" data-date-string="Feb 15, 2025" data-time-string="2:02 AM" title="Feb 15, 2025 at 2:02 AM">Saturday at 2:02 AM</time></li> <li>Forum: <a href="/forums/radio-communications/">Radio and Communications</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/silly-mistake-of-the-week.167324/post-1460731">Silly mistake of the week!</a> </h3> <div class="contentRow-snippet">No, it was still at the initial testing phase :D It hadn't even been breadboarded, I went direct to having a PCB made.</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #3</li> <li><time class="u-dt" dir="auto" datetime="2025-02-14T11:40:32-0800" data-time="1739562032" data-date-string="Feb 14, 2025" data-time-string="11:40 AM" title="Feb 14, 2025 at 11:40 AM">Friday at 11:40 AM</time></li> <li>Forum: <a href="/forums/microcontrollers/">Microcontrollers</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/silly-mistake-of-the-week.167324/">Silly mistake of the week!</a> </h3> <div class="contentRow-snippet">Wrote a nice simple program, for a project at work - a simple interrupt driven pulse counter/divider with the processor in sleep most of the time, looking for five plus years battery life (as it will be potted in resin). Used a little 8 pin PIC, 16F18313 - does everything I need, and I set it...</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Thread</li> <li><time class="u-dt" dir="auto" datetime="2025-02-14T08:51:03-0800" data-time="1739551863" data-date-string="Feb 14, 2025" data-time-string="8:51 AM" title="Feb 14, 2025 at 8:51 AM">Friday at 8:51 AM</time></li> <li>Replies: 2</li> <li>Forum: <a href="/forums/microcontrollers/">Microcontrollers</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/will-this-circuit-fry-my-crystals.167323/post-1460726">Will this Circuit fry my Crystals?</a> </h3> <div class="contentRow-snippet">Yes, it's not critical - 1Meg would be fine, or 2.2Meg, 10Meg - just a grid 'leak' to stop the gate floating.</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #6</li> <li><time class="u-dt" dir="auto" datetime="2025-02-14T08:42:51-0800" data-time="1739551371" data-date-string="Feb 14, 2025" data-time-string="8:42 AM" title="Feb 14, 2025 at 8:42 AM">Friday at 8:42 AM</time></li> <li>Forum: <a href="/forums/radio-communications/">Radio and Communications</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/will-this-circuit-fry-my-crystals.167323/post-1460723">Will this Circuit fry my Crystals?</a> </h3> <div class="contentRow-snippet">I'd like to see a high value resistor from gate to ground, I don't like to see the gate floating.</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #4</li> <li><time class="u-dt" dir="auto" datetime="2025-02-14T07:34:08-0800" data-time="1739547248" data-date-string="Feb 14, 2025" data-time-string="7:34 AM" title="Feb 14, 2025 at 7:34 AM">Friday at 7:34 AM</time></li> <li>Forum: <a href="/forums/radio-communications/">Radio and Communications</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/simulation-of-ac-voltage-regulator.167302/post-1460722">Simulation of AC Voltage regulator</a> </h3> <div class="contentRow-snippet">That looks better.</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #15</li> <li><time class="u-dt" dir="auto" datetime="2025-02-14T07:31:35-0800" data-time="1739547095" data-date-string="Feb 14, 2025" data-time-string="7:31 AM" title="Feb 14, 2025 at 7:31 AM">Friday at 7:31 AM</time></li> <li>Forum: <a href="/forums/circuit-simulation-pcb-design/">Circuit Simulation & PCB Design</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/simulation-of-ac-voltage-regulator.167302/post-1460711">Simulation of AC Voltage regulator</a> </h3> <div class="contentRow-snippet">Your load is still in completely the wrong place, as already pointed out.</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #13</li> <li><time class="u-dt" dir="auto" datetime="2025-02-14T01:16:24-0800" data-time="1739524584" data-date-string="Feb 14, 2025" data-time-string="1:16 AM" title="Feb 14, 2025 at 1:16 AM">Friday at 1:16 AM</time></li> <li>Forum: <a href="/forums/circuit-simulation-pcb-design/">Circuit Simulation & PCB Design</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/diy-home-audio-system.167319/post-1460710">DIY Home Audio System</a> </h3> <div class="contentRow-snippet">That makes no sense whatsoever?. There are countless examples on-line of how to build a stereo amplifier, I suggest you study those - if you find one you like, post a link to it here and we'll comment on it, there are a LOT of totally useless bogus 'designs' out there. Bear in mind, you need...</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #3</li> <li><time class="u-dt" dir="auto" datetime="2025-02-14T01:14:34-0800" data-time="1739524474" data-date-string="Feb 14, 2025" data-time-string="1:14 AM" title="Feb 14, 2025 at 1:14 AM">Friday at 1:14 AM</time></li> <li>Forum: <a href="/forums/electronic-projects-design-ideas-reviews/">Electronic Projects Design/Ideas/Reviews</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/voltage-divider-for-high-volt-measurement.167316/post-1460697">Voltage divider for high volt measurement</a> </h3> <div class="contentRow-snippet">I suspect you're a little confused?, what use would an amplifier be? - you need to reduce the voltage, not amplify it. As suggested throughout the thread, you just need a high voltage, high resistance, probe - which along with the impedance of your meter will make a suitable attenuator...</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #15</li> <li><time class="u-dt" dir="auto" datetime="2025-02-13T12:39:51-0800" data-time="1739479191" data-date-string="Feb 13, 2025" data-time-string="12:39 PM" title="Feb 13, 2025 at 12:39 PM">Thursday at 12:39 PM</time></li> <li>Forum: <a href="/forums/general-electronics-chat/">General Electronics Chat</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/voltage-divider-for-high-volt-measurement.167316/post-1460688">Voltage divider for high volt measurement</a> </h3> <div class="contentRow-snippet">Not all :D We used to have an Eagle EHT meter - basically it was a probe, like above, but it had an analogue meter built-in the handle, and obviously a lead and crocodile clip to connect to chassis. Apparently, there was once an EHT probe, but it got dropped, and broke the internal resistor -...</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #13</li> <li><time class="u-dt" dir="auto" datetime="2025-02-13T06:45:38-0800" data-time="1739457938" data-date-string="Feb 13, 2025" data-time-string="6:45 AM" title="Feb 13, 2025 at 6:45 AM">Thursday at 6:45 AM</time></li> <li>Forum: <a href="/forums/general-electronics-chat/">General Electronics Chat</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/voltage-divider-for-high-volt-measurement.167316/post-1460686">Voltage divider for high volt measurement</a> </h3> <div class="contentRow-snippet">Not an issue in this case though, as his analogue meter already has a higher input impedance (20Mohm on a 1000V range) than a digital one (10Mohm on all ranges). Something to bear in mind when calculating the resistor values. Perhaps it would be a good idea to make it for a 10Mohm digital...</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #11</li> <li><time class="u-dt" dir="auto" datetime="2025-02-13T06:02:30-0800" data-time="1739455350" data-date-string="Feb 13, 2025" data-time-string="6:02 AM" title="Feb 13, 2025 at 6:02 AM">Thursday at 6:02 AM</time></li> <li>Forum: <a href="/forums/general-electronics-chat/">General Electronics Chat</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/gimbal-pcb-no-power.167300/post-1460679">Gimbal PCB no power</a> </h3> <div class="contentRow-snippet">What makes you think it's possible?, presumably the micro will be read protected?.</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #5</li> <li><time class="u-dt" dir="auto" datetime="2025-02-13T01:06:52-0800" data-time="1739437612" data-date-string="Feb 13, 2025" data-time-string="1:06 AM" title="Feb 13, 2025 at 1:06 AM">Thursday at 1:06 AM</time></li> <li>Forum: <a href="/forums/repairing-electronics/">Repairing Electronics</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/rc-delay-for-opamp-input-how-to-calculate.167315/post-1460626">RC delay for opamp input: how to calculate</a> </h3> <div class="contentRow-snippet">There's also the issue that it's not modulated, so will be prone to interference from ambient light.</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #7</li> <li><time class="u-dt" dir="auto" datetime="2025-02-12T06:22:28-0800" data-time="1739370148" data-date-string="Feb 12, 2025" data-time-string="6:22 AM" title="Feb 12, 2025 at 6:22 AM">Wednesday at 6:22 AM</time></li> <li>Forum: <a href="/forums/electronic-projects-design-ideas-reviews/">Electronic Projects Design/Ideas/Reviews</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/using-a-rtc-in-sf-basic.166376/post-1460620">using a RTC in SF basic</a> </h3> <div class="contentRow-snippet">It's not even vaguely similar - the TM1637 is an LED display driver, a 74HC595 is a simple TTL/CMOS logic latch. The 74HC595 is absolutely trivial to drive, if you can't do that simple job (when you've even been given all the code) you don't have much of a chance.</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #327</li> <li><time class="u-dt" dir="auto" datetime="2025-02-12T05:33:37-0800" data-time="1739367217" data-date-string="Feb 12, 2025" data-time-string="5:33 AM" title="Feb 12, 2025 at 5:33 AM">Wednesday at 5:33 AM</time></li> <li>Forum: <a href="/forums/microcontrollers/">Microcontrollers</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/yamaha-av-receiver-repair.167226/post-1460569">yamaha av receiver repair</a> </h3> <div class="contentRow-snippet">Oh dear, you have to be extremely careful in amplifiers, you've probably blown a LOT of parts in the centre amp. I agree that AV amps are absolutely horrible to repair, and you really need the extension leads etc. from the manufacturer to work on them - but the extensions are VERY expensive (if...</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #15</li> <li><time class="u-dt" dir="auto" datetime="2025-02-10T00:21:55-0800" data-time="1739175715" data-date-string="Feb 10, 2025" data-time-string="12:21 AM" title="Feb 10, 2025 at 12:21 AM">Feb 10, 2025</time></li> <li>Forum: <a href="/forums/repairing-electronics/">Repairing Electronics</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/machine-in-shed-for-15yrs-1-4-audio-tape-pr99-revox.167260/post-1460567">Machine in shed for 15yrs - 1/4" audio tape PR99 Revox</a> </h3> <div class="contentRow-snippet">It's freely available to download, a simple google finds it.</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #20</li> <li><time class="u-dt" dir="auto" datetime="2025-02-10T00:17:33-0800" data-time="1739175453" data-date-string="Feb 10, 2025" data-time-string="12:17 AM" title="Feb 10, 2025 at 12:17 AM">Feb 10, 2025</time></li> <li>Forum: <a href="/forums/general-electronics-chat/">General Electronics Chat</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/machine-in-shed-for-15yrs-1-4-audio-tape-pr99-revox.167260/post-1460555">Machine in shed for 15yrs - 1/4" audio tape PR99 Revox</a> </h3> <div class="contentRow-snippet">I've no idea, but presumably a google will find sources? Here's presumably the official site? https://www.revox-online.de/en-gb/spare-parts</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #17</li> <li><time class="u-dt" dir="auto" datetime="2025-02-09T12:29:56-0800" data-time="1739132996" data-date-string="Feb 9, 2025" data-time-string="12:29 PM" title="Feb 9, 2025 at 12:29 PM">Feb 9, 2025</time></li> <li>Forum: <a href="/forums/general-electronics-chat/">General Electronics Chat</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/machine-in-shed-for-15yrs-1-4-audio-tape-pr99-revox.167260/post-1460553">Machine in shed for 15yrs - 1/4" audio tape PR99 Revox</a> </h3> <div class="contentRow-snippet">Replace the pinch roller, if it's sticky it's already too far gone - check any other rubber parts as well. Back when I used to get tape recorders for repair it was VERY common for the rubber belts to have completely disintegrated, and disappeared all together - if you were lucky, you could find...</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #15</li> <li><time class="u-dt" dir="auto" datetime="2025-02-09T10:52:53-0800" data-time="1739127173" data-date-string="Feb 9, 2025" data-time-string="10:52 AM" title="Feb 9, 2025 at 10:52 AM">Feb 9, 2025</time></li> <li>Forum: <a href="/forums/general-electronics-chat/">General Electronics Chat</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/machine-in-shed-for-15yrs-1-4-audio-tape-pr99-revox.167260/post-1460548">Machine in shed for 15yrs - 1/4" audio tape PR99 Revox</a> </h3> <div class="contentRow-snippet">Capacitors are unlikely to be a problem, as it's not an antique valve set - where old ones can explode as they may need reforming first. There are no capacitors of that age in the Revox, nor the voltage levels to explode capacitors as in old valve equipment. Leave it on long enough to see if it...</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #13</li> <li><time class="u-dt" dir="auto" datetime="2025-02-09T08:54:08-0800" data-time="1739120048" data-date-string="Feb 9, 2025" data-time-string="8:54 AM" title="Feb 9, 2025 at 8:54 AM">Feb 9, 2025</time></li> <li>Forum: <a href="/forums/general-electronics-chat/">General Electronics Chat</a></li> </ul> </div> </div> </div> </li> <li class="block-row block-row--separated js-inlineModContainer" data-author="Nigel Goodwin"> <div class="contentRow "> <span class="contentRow-figure"> <a href="/members/nigel-goodwin.10131/" class="avatar avatar--s" data-user-id="10131" data-xf-init="member-tooltip"> <img src="/data/avatars/s/10/10131.jpg?1378874952" alt="Nigel Goodwin" class="avatar-u10131-s" width="48" height="48" loading="lazy" /> </a> </span> <div class="contentRow-main"> <h3 class="contentRow-title"> <a href="/threads/small-signal-transformer.167303/post-1460543">Small signal transformer</a> </h3> <div class="contentRow-snippet">It's the sort of thing that tends to be custom made, you would probably have to wind your own.</div> <div class="contentRow-minor contentRow-minor--hideLinks"> <ul class="listInline listInline--bullet"> <li><a href="/members/nigel-goodwin.10131/" class="username " dir="auto" data-user-id="10131" data-xf-init="member-tooltip"><span class="username--moderator username--admin">Nigel Goodwin</span></a></li> <li>Post #2</li> <li><time class="u-dt" dir="auto" datetime="2025-02-09T08:03:08-0800" data-time="1739116988" data-date-string="Feb 9, 2025" data-time-string="8:03 AM" title="Feb 9, 2025 at 8:03 AM">Feb 9, 2025</time></li> <li>Forum: <a 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