Ultraprecision long delay circuit

Published:2011/4/6 4:06:00 Author:Nicole | Keyword: long delay, ultraprecision | From:SeekIC

It has no need of electrolytic great timing capacitor, then can get a delay of 0.3ms to 3min, it uses steady low loss paper medium or polyester film capacitor, it also can reduce the peak current of timing unijunction transistor(Q1), so the gird resistance R1 can be replaced by large resistance.



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