LONG_DELAYS

Published:2009/7/14 22:31:00 Author:Jessie | From:SeekIC

Delays up to 2 hours are obtained, using unijunctiom transistor Q1 as trigger for scr and Q2 as free-running oscillator. Only 2 na through timing resistor R1 will provide triggering.-D. V. Jones, Quick-On-The-Trigger Design, Electronics, 38:12, p 105-110.



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