This board is a dual one-shot multivibrator. The delay is controlled by a capacitor and a resistor and either the on board or external components can be used. Front panel mounted variable components can be used to allow the timing to be controlled by the user. Delays from 400 nanoseconds to 4 seconds can be generated. When triggered it generates a pulse for the specified length.
This board cost $44 in 1968.
Schematic of board as a scanned PDF file.
Feel free to contact me, David Gesswein email@example.com 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.
PDP-8 Home Page  PDP-8 Site Map  PDP-8 Site Search