INTEGATE_AND_DUMP

Published:2009/7/10 3:41:00 Author:May | From:SeekIC

Transistor is used as switch, without power supply. Simple RC integrator will dump (discharge C) completely in about 1 μs when dump input is logic 1 (+5 V).Values of R and C determine time constant of integrator. Without power supply, circuh can only drive high-impedance load; for low-impedance load, add FET-input opamp such as Analog Devices 40J as buffer.-R. Riordan, Integrate and Dump Circuit Uses No Power Supply, EDN Magazine, Feb. 20, 1973, p 93.



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