Samlex PSA-305 current control add on.

Thread Starter

be80be

Joined Jul 5, 2008
2,394
I have a Samlex PSA 305 that friend gave me looks like a nice supply I am doing some mods to it.
Overcurrent Sense Circuit Modification and Modification to Eliminate Power-Off Voltage Overshoot.

Those I have worked out from here https://w1hue.org/Articles/samlex_mods.html
Next thing I want add is current control.

Here the circuit looking for good ideal to add current control.
Samlex2.png



samlex.png
 

Thread Starter

be80be

Joined Jul 5, 2008
2,394
I guess no one wants to post any of there ideas to figure best way to add current control limiting to this.
 

Thread Starter

be80be

Joined Jul 5, 2008
2,394
Here something I found But testing it doesn't seem to control any current.
limlit.png
 
Last edited:

sonny1102

Joined Jun 22, 2022
1
I damaged the main control board of my PSA-305 and don't know how to use the cad, ect to re do it. I guess I need a gerber thing to order it? Can anybody help me?
 

Thread Starter

be80be

Joined Jul 5, 2008
2,394
It’s really not hard to fix it mine works great all but the current I was going to change it but got put on back burner
 
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