BYPASSING_SOLENOID_TRANSIENTS

Published:2009/7/14 23:46:00 Author:Jessie | From:SeekIC

Feedback from collector to base of power transistor through C1 and R2 protects device from destructive transients generated when inductive load such as solenoid is turned off. Alternative use of diode CR2 or CR1-R1 across coil would limit voltage transient but would increase solenoid release time.-D. Thomas, Feedback Protects High-Speed Solenoid Driver, EDN Magazine, Jan. 1, 1971, p 40.



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