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Old 26th August 2008, 06:18 PM   #1
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Default What's the biggest full wave damper diode?

Working on a big guitar amp finally, big enough to need a GZ34.

I was wondering if there was a damper diode alternative to that? I know about the 6CD3/6CE3/6CG3, but these are only half wave, and 2 would need lots of heater current. I know about the 6BY5, but that's only good for 175mA I guess.
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Old 26th August 2008, 06:55 PM   #2
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6AX6? Good luck finding any... a pair of dampers would do as well.
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Old 26th August 2008, 07:09 PM   #3
Rodango is offline Rodango  United States
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My personal favorite is the Soviet Svetlana 5C3S. They are 5U4s on steroids and can be obtained inexpensively on ebay.
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Old 26th August 2008, 07:35 PM   #4
Colt45 is offline Colt45  Serbia
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'cept that isn't a damper --^

there isn't really fullwave dampers as such, because you only need one damper diode in a TV...
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Old 26th August 2008, 10:10 PM   #5
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Just for my edification what makes a damper diode different from any other vacuum diode?
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Old 26th August 2008, 11:00 PM   #6
mcs is offline mcs  Denmark
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Quote:
Originally posted by mashaffer
Just for my edification what makes a damper diode different from any other vacuum diode?
Slow heat-up, low internal impedance (= low voltage drop), and a good heater/cathode isolation so you can use a common heater supply.

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Old 26th August 2008, 11:22 PM   #7
DougL is offline DougL  United States
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Just for my edification what makes a damper diode different from any other vacuum diode?
A damper diode (or efficiency diode in Europe) was used in TV in the horizontal output stage. The circuit was high voltage, high current, low pulse duration service.


Understanding the Horizontal output stage

HTH

Doug
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Old 27th August 2008, 12:19 AM   #8
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Default Re: What's the biggest full wave damper diode?

Quote:
Originally posted by leadbelly
Working on a big guitar amp finally, big enough to need a GZ34.

I was wondering if there was a damper diode alternative to that? I know about the 6CD3/6CE3/6CG3, but these are only half wave, and 2 would need lots of heater current. I know about the 6BY5, but that's only good for 175mA I guess.
Dude,

The 6BY5 is good for 175 mA. continuous DC per plate. Carefully peruse the 6BY5 data sheet.

BTW, Chinese made 5AR4s from reputable dealers, like Jim McShane, are both reliable and reasonably priced.
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Old 27th August 2008, 12:24 AM   #9
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What about the 6by5?

Chris
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Old 27th August 2008, 04:03 AM   #10
athos56 is offline athos56  United States
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I'm using a pair of 6D22S's in my new project
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