TAPE_READER

Published:2009/7/20 11:01:00 Author:Jessie | From:SeekIC

Simplified circuitry, few components, storage capability, and output power above 20 W are advantages of using silicon controlled switch in place of multistage amplifier for photoelectric paper-tape readers. Thyratron-like characteristics maintain output after photoelectric stimulus disappears, until cut off by control circuit. Asterisk on one pole of relay K indicates that similar pole is required for each bit in two-mode operation.-SCR Switch Eliminates Amplifier for Photoelectric Readers, Electronic Circuit Design Handbook, Mactier Pub. Corp., N.Y., 1965, p 222.



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