On Sun, 07 Dec 2003 18:01:57 +1300 Skip wrote:

I am looking for a source for a Zener Diode. I am building an HF
Amplifier using a GS-35b and the schematic I'm using to build the amp
calls for a 36v 50w zoner diode for bias. Here in New Zealand there
does not seem to be anyone with anythings close to what I need.

50 W stud mount Zeners used to be a standard product, but most
manufacturers dropped them about 20 years ago. I understand that they
were still available from someone for a long time, but they might be
completely unavailable by now.

Also, would it be possible to string a few lower volt watt zeners
together to come up with a close value to what is needed?

Sure, string 10 3.6V/5 W Zeners, that would work fine if you can get
3.6V, which seems unlikely.

A more reasonable solution would be to make your own regulator using a
low power Zener and a power transistor that can handle the power. You
can make either a shunt or series regulator this way.

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Jim Adney
Madison, WI 53711 USA
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