This board is a -10 volt reference with remote sense. It can source 40 milliamp and sink 90 milliamp. Load regulation and ripple is .1mv and 4 mv accuracy over 0 to 50 degrees C.
This board cost $184 in 1968.
Schematic of board as a scanned PDF file.
Feel free to contact me, David Gesswein firstname.lastname@example.org with any questions, comments on the web site, or if you have related equipment, documentation, software etc. you are willing to part with. I am interested in anything PDP-8 related, computers, peripherals used with them, DEC or third party, or documentation.
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