Author Topic: DIY powersupply really old with push-buttons special idea  (Read 431 times)

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Offline oz2cpuTopic starter

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DIY powersupply really old with push-buttons special idea
« on: May 23, 2024, 12:52:34 pm »
here is a new teardown video from me,
this design idea is so special and rare it is worth to mention here:
https://youtu.be/nZnH6WrpSAU

i think it is from 1975-1985, name of designer unknown
the push-buttons for all voltages is a really special idea, I have not seen anything like this before,
it dont really work in real life if you ask me :-)
this one is full of loose connections and unstable behaviours, i did not repair it for now, since its low useability for my lab / collection.
Radioamateur OZ2CPU, Senior EE at Prevas
EMC RF SMPS SI PCB LAYOUT and all that stuff.
youtube : oz2cpu teardown
 
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Offline coromonadalix

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Re: DIY powersupply really old with push-buttons special idea
« Reply #1 on: May 23, 2024, 03:26:07 pm »
yeah tons of possible failures     thks for the video
 
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Offline oz2cpuTopic starter

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Re: DIY powersupply really old with push-buttons special idea
« Reply #2 on: May 23, 2024, 08:51:48 pm »
exactly.. I think we figured out what this idea is not seen anywhere else..
or please prove me wrong :-)
Radioamateur OZ2CPU, Senior EE at Prevas
EMC RF SMPS SI PCB LAYOUT and all that stuff.
youtube : oz2cpu teardown
 

Offline nctnico

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Re: DIY powersupply really old with push-buttons special idea
« Reply #3 on: May 23, 2024, 11:17:47 pm »
here is a new teardown video from me,
this design idea is so special and rare it is worth to mention here:
https://youtu.be/nZnH6WrpSAU

i think it is from 1975-1985, name of designer unknown
the push-buttons for all voltages is a really special idea, I have not seen anything like this before,
Some PSUs have a slide switch for a semi-fixed output channel. Like this one from Siglent:


So the idea is not that weird.
There are small lies, big lies and then there is what is on the screen of your oscilloscope.
 


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