I am looking for switch-mode PSU based on TL494 IC.
The requirement is 13.8V @ 15A or higher.
I saw someone on the net use old PC AT PSU and rip-it up and make PSU out of it!
Is this safe? That beast have around 400V at several Amps on the Primary-side and could cause.. you know what.
Anyone hv built or design one (safely) pls share it in this post.
The "modified" PC-AT power supply can be as safe as one you may buid from scratches by yourself ..
I don't see any reason why you couldn't do the same and save yourself a lot of design and construction work ..
Thanks guys,
Anyway I need the 13.8VDC SMPS circuit which can deliver high current (>10A) to be used in the workshop. I intend to 'modify' the PC power supply because they are cheap and readily available.
I found one article which 'rip--up' an AT PSU and convert it to13.8V 20A power supply!
However it involves re-winding of the op transformer.
Pls take a look at the schematics and give your comment.
I post it here to share with everybody.