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.

-
-----------------------------------------------
Jim Adney
Madison, WI 53711 USA
-----------------------------------------------

Skip wrote:

Hello List,

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.

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?

Thanks for the help

Skip..

36V Zeners are available from www.bgmicro.com. I'm not sure about the
power rating though. You might have to use it with a transistor to
handle the current.

Rick

I think I remember seeing something about this at AG6K
web site. I built a 3-1000Z amp once and strung 1N5400 series diodes
together. Of course the bias was lower.


Doug N4IJ

wrote in message
...
Skip wrote:

Hello List,

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.

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?

Thanks for the help

Skip..

36V Zeners are available from www.bgmicro.com. I'm not sure about the
power rating though. You might have to use it with a transistor to
handle the current.

Rick

Greetings

Unfortunately I can only read 2 or the responces...

May I ask what the zener diode is regulating voltage for....?



"DOUGLAS SNOWDEN" wrote in message
...
I think I remember seeing something about this at AG6K
web site. I built a 3-1000Z amp once and strung 1N5400 series diodes
together. Of course the bias was lower.


Doug N4IJ

wrote in message
...
Skip wrote:

Hello List,

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.

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?

Thanks for the help

Skip..

36V Zeners are available from www.bgmicro.com. I'm not sure about the
power rating though. You might have to use it with a transistor to
handle the current.

Rick

I think I remember seeing something about this at AG6K
web site. I built a 3-1000Z amp once and strung 1N5400 series diodes
together. Of course the bias was lower.


Doug N4IJ

wrote in message
...
Skip wrote:

Hello List,

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.

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?

Thanks for the help

Skip..

36V Zeners are available from www.bgmicro.com. I'm not sure about the
power rating though. You might have to use it with a transistor to
handle the current.

Rick

Skip wrote:

Hello List,

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.

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?

Thanks for the help

Skip..

36V Zeners are available from www.bgmicro.com. I'm not sure about the
power rating though. You might have to use it with a transistor to
handle the current.

Rick