Hi Rag, Chris, and all,
It'll be a lot dearer than making a board using 6A10
diodes yourself though.
I agree with that. I think it's a mighty waste of money to buy such
encapsulated high voltage rectifiers. Sure, they look "professional", if
that's what a ham wants in his amplifier... But a simple string of plain
common cheap diodes will do the same job, at a small fraction of the cost.
In my old amplifier I use strings of five 1N5408 diodes. This amp has a
voltage doubling power supply, so the voltage stress is the same, and
the current stress is twice as much as the diode strings in a bridge
rectifier for the same DC voltage and current would be exposed to. Still
five of these diodes provide plenty safety margin. I'm using them since
15 years ago, and they have never failed. Instead the original rectifier
modules of that amp, which were rated at only 750mA, failed.
Note that these diode strings are plain, simple and pure, without any
resistors nor capacitors in parallel. The mentioned diodes have very low
reverse current, and benign avalanche characteristics, which makes those
resistors and capacitors totally superfluous. And you can buy these
diodes locally almost anywhere in the world, for very little money.
Manfred
========================
Visit my hobby homepage!
http://ludens.cl
========================
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|