TWO_OUTPUT_SQUARE_WAVE_PULSE_GENER_ATOR

Published:2009/7/15 23:51:00 Author:Jessie | From:SeekIC

Pairs of control pulses are provided in sequence by silicon unijunction transistor in relaxation oscillator. Interval between pulses is determined by R3-C2. When C2 charges enough to trigger Q4, pulse fed to base of Q5 makes it conduct heavily; C3 charges and reset pulse is then developed across R4. Next, Q5 switches off, thereby feeding negative pulse to base of Q6 to switch Q6 off and make its collector voltage rise rapidly to form negative second pulse of pair.-C. D. Todd, Tunnel Diode Detects Currents Down to 100 Femtoamperes, Electronics, 36:14, p 33-37.



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