Re: reverse recovery time of 6 kV diodes from All-Electronics

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Peter Lawrence by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Peter.Lawrence-at-Sun-dot-com>


OK, "dumb question" time, what if you put a diode at the _base_ of the TC
secondary where currents are high but voltages are much much smaller than
at the top.

-Peter Lawrence.


>
>Original poster: "Justin Hays by way of Terry Fritz <twftesla-at-qwest-dot-net>" 
<pyrotrons2000-at-yahoo-dot-com>
>
>Thank you Jim for posting this information. I have wondered about the
>diode's Trr for quite some time now. 
>
>I know they work great for rectifying the output of a flyback
>transformers, as I have used them to do this at frequencies greater
>than 100kHz. No problem for the diodes.
>
>This leads me to believe that these actually COULD rectify the output
>of a Tesla coil. I wonder if it would work with spark-gap types, as a
>BUNCH might have to be put in series for the initial voltage pulse
>right after the gap fires.
> 
>It looks especially promising for the solid-state and vacuum-tube
>driven types as the output is very clean.
>
>Got a question for Jim and All: What does putting the diodes in
>series do to the reverse recovery time (Trr) of the string? I have
>been told by an engineer whom I know, that it doesn't affect it at
>all. Trr remains the same, PIV' are added, and current handling
>capability stays the same.
>
>Is this true?
>
>Take care,
>
>Justin Hays
>KC5PNP
>Email: justin-at-hvguy-dot-com
>Website: www.hvguy-dot-com
>
>
>