PRECISION_SCR_DELAY

Published:2009/7/15 3:08:00 Author:Jessie | From:SeekIC

Gives time delays over 3 minutes without need for tantalum or electrolytic capacitor. Timing capacitor C1 can be mylar unit. Application of power in itiates timing of power, which is determined by R1-C1. Al end of interval, 2N494C fires other scr, to place supply voltage across load.-D. V. Jones, Precision Solid-State Delay Circuit, EEE, 11:12, p 26-27.



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