Avalanche Diodes as EHT Stabilisation

[ppppenguin]

I beleive that almost any rectifier will act as an avalanche diode though the voltage will not be predictable. It may well be stable so experiments with a string of 1N4007 might give promising results.

PS: Just tried it with a random 1N4007, 1M series resistor and my bench 5kV variable PSU. Looks like it stabilised at about 2kV across the diode.