Need flyback diode for H-19

[Terry N4TLF]

Thanks for the info George.  I found some HV diodes on Amazon for tesla coils.  They appear to operate fine so far, I am running tests right now.  You are correct, I was worried about the faster switching rates for CRT use vs microwave diodes.

tnx & 73,
Terry


From: George Lemaster 
Sent: Thursday, November 29, 2018 11:35 AM
To: tacos at amrad.org 
Subject: Re: Need flyback diode for H-19

Terry, hopefully you’ve probably solved your CRT hv diode problem, but here’s a vendor with (cheap) fast switching HV diodes: 
http://hvstuff.com/high-voltage-diodes-and-rectifiers

At 15kHz pulse rate from a flyback, diodes made for 60hz, like transformer type microwave oven diodes, are generally too slow a recovery time, and overheat above several kHz. 

73
George


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