[Prev][Next][Index][Thread]
High Voltage Diodes
----------
From: D.C. Cox [SMTP:DR.RESONANCE-at-next-wave-dot-net]
Sent: Sunday, March 01, 1998 6:56 PM
To: Tesla List
Subject: Re: High Voltage Diodes
to: Rod
HV diodes have a certain "breakover" voltage before they begin to conduct.
Most HV diodes require 300-500 volts for effective testing. We use a 5 kV
xmfr and then use a series of NE-s neon lamps and large HV resistors to
check HV diode strings. The lamps indicate the relative leaking current at
10 ma, 1 ma, 1/2 ma, and 1/10th ma. We use the same system to check HV
caps for leakage as many won't breakdown at lower potentials but will start
corona leaking at higher potentials as they go bad. You can not use a
simple low voltage multimeter type instrument to check HV diodes as you
discovered.
DR.RESONANCE-at-next-wave-dot-net
----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: 'Tesla List' <tesla-at-pupman-dot-com>
> Subject: High Voltage Diodes
> Date: Sunday, March 01, 1998 9:03 AM
>
>
> ----------
> From: RODERICK MAXWELL [SMTP:tank-at-magnolia-dot-net]
> Sent: Saturday, February 28, 1998 12:15 PM
> To: tesla-at-pupman-dot-com
> Subject: High Voltage Diodes
>
> I have four 15Kv-at-750ma microwave oven diodes that I plan on using in a
> Dc supply for my new tesla coil. When I test them with my ohm meter they
> all read infinite resistance even when I reverse the leads. Is this a
> property of high voltage rectifier diodes??? These are new diodes that
> have not even been used in a circuit yet. All of my experiance has been
> with the lower voltage variety. If anyone has used these type of diodes
> before, HELP!
>
>
>
> Frankensteins Helper
> Max
>