15_MINUTE_SCS_TlMER

Published:2009/7/23 22:21:00 Author:Jessie | From:SeekIC

Transistor and silicon controlled switch together serve to open relay 15 minutes after it is activated by man ual dosing of battery switch, for operating recording instruments.-T. H. Charters, Low-Cost Time Delay Controls Recorder, Electronics, 37:18, p 84.



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