The time delay circuit of dual-way transistors

Published:2011/6/25 5:25:00 Author:qqtang | Keyword: time delay circuit, dual-way transistors | From:SeekIC

In the figure is the time delay circuit of dual-way transistors. Apart from the values of C1, C2 and R4, the timing is also relevant to the time of pressing the key. VTH can be the dual-way transistors of MAC94A4 and MAC97A6, and the β values of both VT1 and VT2 should be larger than 200.



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