UP_DOWN_STAIRCASE_WAVE_GENERATOR

Published:2009/6/24 2:56:00 Author:May | From:SeekIC

This staircase waveform first steps up and then steps down by the circuit shown. An input pulse generator provides the pulses that cause the output to step up or down, depending on the conduc-tion of the clamp transistor, Q1. When this is ON, the down current pulse is diverted to ground and the staircase then steps up. When the upper voltage trip point of Amp 2 is reached, Q1 goes OFF and as a result of the smaller down input resistor (one-half the value of the up resistor, R1), the staircase steps down to the low-voltage trip point of Amp 2. The output voltage, therefore, steps up and down between the trip voltages of the Schmitt Trigger.



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