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Electronics Workbench PSU with Multiple Outputs from an old PC PSU - random electronics fun!

PSU Electronics Lab Bench

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#1 Oblio

Oblio

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Posted 02 December 2017 - 05:50 AM

Hello Community,

 

For anyone interested in electronics, I semi-recently turned an old Antec 500w PC PSU into an electronics lab power supply...sort of a fun/cheap project for anyone with a desire to play with electronics that possesses some soldering skills.  Total project investment was around 4 dollars - not bad!

 

A great part of this project is that between the rails, you have the flexibility to use 3.3, 5 and 12 volts and any combinations of those...with protection circuits and with a decent amount of amperage (ok HIGH amperage - enough to cook projects and be quite lethal if not careful!!!).  If you are a PC enthusiast, likely you have several PSUs in your basement...I sure do!  If you need a lab PSU, this may be of interest to you!

 

I also recently built a signal tracer as well...the body of the device is an old toothbrush (lols, I know...super "ghetto", but it IS insulating :))...another budget project I can walk anyone through that is interested.  The benefit of this tracer is that it can connect to a battery powered speaker and use a cell phone for a signal generator...this avoids any possible ground issues that could blow up the devices in question...sort of neat!

 

***

 

I'm trying to diagnose a kit PAiA 5760 Roctave Divider guitar pedal that was gifted to me several years ago that has never worked.  I have schematics and have corrected several issues from the initial build, but still "no go"...not sure if anyone here is familiar with op amps, etc...but I have a feeling that the initial build errors either cooked some op amps or transistors.  Anyway, this could be an interesting thing to diagnose.  Any assistance would rock...tave!

 

Keep rockin' everyone!  Cheers!

 

Oblio


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