TRANSISTOR_SWITCHED_IGNITION

Published:2009/7/24 4:18:00 Author:Jessie | From:SeekIC

Ignition breaker points handle only current of about 0.25 amp for switching transistor Q1, in-creasing contact life, while transistor handles 9-amp peak ignition coil current. Diode D1 reverse-biases emitter-base junction when distributor contacts are open, to ensure transistor cutoff at high temperaturs. Zener D2 dips peaks of transients that might damage transistor.-S. B. Gray, Home and Auto Controls, Electronics, 36:19, p 52-56.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Control_Circuit/TRANSISTOR_SWITCHED_IGNITION.html

Print this Page | Comments | Reading(3)