Building a quality PSU

[srowe]

While I have a number of original "bricks" I'm well aware that they can suffer from catastrophic failure (I've just scrapped one that put out 9V to the 5V terminals). I'd like to make a bench supply, suitable for both the VIC and C64. There are many cheap 5V PSUs available but I think I'd rather have something better designed/built. For the 9VAC I think a 30VA toroidal transformer should be sufficient. What should I look for to provide 5VDC?

[srowe]

I've just remembered I had a homemade PSU at the back of the cupboard.

The LM340 is rated at 1.5A, I wonder if I could replace that with an LM323 to increase that to 3A?

[Orangeman96]

I just got a custom PSU from Ray Carlsen that services both versions of the VIC-20 and the C= 64; suffice it to say I LOVE it! -OGM

[srowe]

I just got a custom PSU from Ray Carlsen that services both versions of the VIC-20 and the C= 64; suffice it to say I LOVE it! -OGM

I believe Ray has retired now.

[Orangeman96]

I've just remembered I had a homemade PSU at the back of the cupboard.

The LM340 is rated at 1.5A, I wonder if I could replace that with an LM323 to increase that to 3A?

I just came across this, and thought some might find it of interest: perhaps as a "one-off," "in-house" project... .

Pax,

OGM

[RobertBe]

I believe Ray has retired now.

Ray has retired from all Commodore repair, but he still sells his power supplies and will even make custom p.s.'s for you. See his p.s. page at

https://portcommodore.com/rcarlsen/customPS.html

Truly,
Robert Bernardo
Fresno Commodore User Group - http://www.dickestel.com/fcug.htm
Southern California Commodore & Amiga Network - http://www.portcommodore.com/sccan
April 13-14 Commodore Los Angeles Super Show 2024 - http://www.portcommodore.com/class