Metropolitian Posted July 25, 2020 Share Posted July 25, 2020 There are a lot of videos on the web. The one very recent and some very old. And then there are the few which tells us about things from the past. Post your video / link that you find unique. Link to comment Share on other sites More sharing options...
Metropolitian Posted July 25, 2020 Author Share Posted July 25, 2020 I will start with this; an attempt to re-create the Edison-effect lamp. Termionic emission, by accident encountered when Edison was trying to find the best way to fix the filament. He found out that electrons jumped to the filament holder. And the tube was 'born'. 1 Link to comment Share on other sites More sharing options...
sometimewoodworker Posted July 25, 2020 Share Posted July 25, 2020 This is one reason why these are not good as the tests are unknown in most places 2 Link to comment Share on other sites More sharing options...
sometimewoodworker Posted July 26, 2020 Share Posted July 26, 2020 (edited) An excellent starting point for those interested in electronics design and Manufacture is Big Clive he has an interesting and varied channel including working on the Edinburgh Tattoo here is one example, there are hundreds more Edited July 26, 2020 by sometimewoodworker Link to comment Share on other sites More sharing options...
Metropolitian Posted August 13, 2020 Author Share Posted August 13, 2020 Art, from the beginning to the end. * Quick 'checkup' of the internals. * Restoring the potted thing, which was a kind of an transformer. * The making of a diy horn. 1 Link to comment Share on other sites More sharing options...
Metropolitian Posted August 26, 2020 Author Share Posted August 26, 2020 This time another item from the parts box; an tosti machine which has failed. It is pretty new, no scratched and the three teflon sets are still unused. I I went on and opened the thing to look what could be possibly wrong with it. Measured all the connection and everything was ok, also the cord has all three wires and earth is connected to all iron parts. Only one thing wasn't working. The thermostat. In this particular device it is an KSD301 which trips and autoresets on 155 C. Will replace that and to follow the theme of this thread, I've found a youtube video which shows the KSD 301 thermostat as well another one which need to be reset'd manually, the 90PM1. The autoreset one are mostly found in your microwaves, ovens, pumps while the manual reset you can find in your shower water heater. The first 5 minutes is informative, showing what they both do and how they work. After 5 minutes the tear down begins for who want to see the insides. 1 Link to comment Share on other sites More sharing options...
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