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Subject: Re: One note plays and stays on when unit switched on


Author:
Roger Dalziel
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Date Posted: 11:15:56 12/12/02 Thu
In reply to: Neil Palmer 's message, "One note plays and stays on when unit switched on" on 07:01:58 12/10/02 Tue
 You might also check the diode which protects the driver transistor from reverse EMF generated when the solenoid drive current is turned off. Diode failure is rare, but lack of the diode's protection will destroy a new transistor immediately.
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Re: One note plays and stays on when unit switched onDanny22:38:19 04/10/03 Thu

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