[Amps] HELP: obsolete power zener for a TL-922

Steve Katz stevek at jmr.com
Tue Jan 28 08:07:13 EST 2003

You might try a 1N3306B from R.F. Parts: 7.5V, 50W stud mount, $13.95/each.


"Success is the ability to go from failure to failure with no loss of
enthusiasm." -Winston Churchill

> -----Original Message-----
> From:	ke5c [SMTP:ke5c at hot.rr.com]
> Sent:	Monday, January 27, 2003 4:31 PM
> To:	amps at contesting.com
> Subject:	[Amps] HELP: obsolete power zener for a TL-922
> Does anyone know of a source for power zeners?  I lost the bias zener in
> an
> old Kenwood TL-922.  It's 7.2 volts at unknow watts, but it carries both
> grid and plate current which could total near an amp, so it's likely at
> least a 10 watt device - and it looks it.  Kenwood says it's discontinued,
> and it's replacement, a "ZX7.5" is $49.70, and I'm hoping to find a less
> expensive solution.  It failed when a 160 volt electrolytic blew up and
> spewed foil around the base of the control transformer, and I think the
> zener got a dose of 110 v to ground - the amp was sitting in idle mode at
> the time.  Thanks for any suggestions.
> 73, John, ke5c at arrl.net
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