If they are off the same reel, you should be OK without resistors. 1N5408s are
pretty slow, so I don't think you need capacitors, either. But an MOV on the
transformer primary and step start are good for minimising stress on
everything.
I did work at a semiconductor company where they made diodes - nothing as small
as a 1N5408 though, but diodes rated at 2000 amps and 1500 volts PIV. The guys
there told me that devices from the same batch shouldn't need equalising
resistors
73
Peter G3RZP
========================================
Message Received: Sep 13 2013, 05:28 PM
From: "Hardy Landskov" <n7rt@cox.net>
To: amps@contesting.com
Cc:
Subject: [Amps] Rectifier equilization?
I have just rejoined the amp list after a few years and am wondering if the
diode equalization question was ever resolved.
I am building a new bridge HV PS and it uses 12 diodes per leg. Rich Measures
says using a .01 & 470K across each diode is no longer needed due to
improvements in semiconductor manf. processes.
I have 100 1N5408's that came off the same reel so I feel they should be
matched fairly close.
I would like to hear a few opinions.
Thanks
73 Hardy N7RT
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