12_V_PROGRAMMER_FOR_PROM

Published:2009/7/5 20:31:00 Author:May | From:SeekIC

Circuit includes regulator for operation from 12-V auto storage battery. Developed to use 8223 32-word by 8-bit memory as CW identifier. All outputs of memory are initially at logic 0, so only logic 1s need to be programmed. After programming a 1, LED comes on to confirm it when S7 is switched to VERIFY. Do not hold S8 down longer than 1 s.-G. W. Kufchak, The PROM Zapper, 73 Magazine, Sept. 1976, p 112.



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