These avalanche diodes require no shunt resistors or capacitors. Could not
be easier than that!
73,
Gerald K5GW
In a message dated 1/28/2016 3:12:10 P.M. Central Standard Time,
vk6vz@arach.net.au writes:
G’day
I am refurbishing the power supply board in my Alpha 91b and am going to
replace the KD202P diodes which make up the bridge with 6A10 diodes (1000V
6A and only A$1.95 each).
The original bridge had strings of five KD202P a side, with shunt
resistors across each diode of 500K 1W. The stud mounted diodes are looking
pretty
burnt around the retaining washers/bolts, so it is definitely time (and I
have a strange earth leakage fault).
Please, I’d really appreciate some advice about what value of shunt
resistor to use on each of the twenty 6A10 that will make up the bridge?
PS The replacement encapsulated bridge rectifier sold by Alpha/RKR designs
(5kV, 2A) is US$150, so this the reason for looking for a cheaper solution.
Vy 73
Steve, VK6VZ
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