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Re: Zener Diodes in a 5F1 Champ to lower B+?

1/19/2005 8:37 AM
marT	Re: Zener Diodes in a 5F1 Champ to lower B+? Hello, I too am building a 5F1 and I have a B+ of 400 volts DC which I want to lower by some 50 volts. Could someone give me a hint on where to get zener diodes in Germany? I tried my usual dealer of choice - www.rs-components.de and they do have zeners, but unfortunately only the expensive magnatec, wich are rated at 20 watts. These are actually very nice, as you can hook them up with a screw and then solder the PT secondary center tap to a little stud coming out of the zener, but the ones they are offering unfortunately have the wrong polarity. All other Zeners I could find were rated at 1.3 Watts and the ratings will of course go down as tubes heat up thanx, mart

1/19/2005 8:37 AM

marT

Re: Zener Diodes in a 5F1 Champ to lower B+?

Hello, I too am building a 5F1 and I have a B+ of 400 volts DC which I want to lower by some 50 volts.

Could someone give me a hint on where to get zener diodes in Germany? I tried my usual dealer of choice - www.rs-components.de and they do have zeners, but unfortunately only the expensive magnatec, wich are rated at 20 watts. These are actually very nice, as you can hook them up with a screw and then solder the PT secondary center tap to a little stud coming out of the zener, but the ones they are offering unfortunately have the wrong polarity.

All other Zeners I could find were rated at 1.3 Watts and the ratings will of course go down as tubes heat up

thanx, mart

Replies:

Chris @ CMW amps Hi MartEmail me you... -- 1/19/2005 9:25 AM
Bruce /Mission Amps What PT and rectifier are you using... -- 1/19/2005 9:45 PM
Dave H. 1/20/2005 3:27 AM