Ibm 5155 power supply document

[Hugo Holden]

Hello fellow vintage computer lovers,

I have just completed a 21 page document on the 5155's power supply. This includes diagrams, schematics, voltage measurements, circuit theory and oscilloscope recordings etc. I had been meaning to do this for some time, since I am a big time 5155 enthusiast. The hand drawn diagram on minuszerodegrees helped in the process.

This power supply actually contains a number innovations and was very advanced for its time:

http://worldphaco.com/uploads/The_IBM_5155_POWER_SUPPLY.pdf

(If any errors are detected, please advise and I can edit it accordingliny)

 

[ldkraemer]

THANK YOU! It's going into my stash of Power Supply information.
I've downloaded it for future reference.

Larry

 

[modem7]

Impressive. Thank you.

I have added a link to your document in the 'Circuit Diagram' section of [here].