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De-Q-ing diodes
Original poster: Rob Maas <robm-at-nikhef.nl>
Hi All,
Recently Daniel Barrett wrote:
>Original poster: "Daniel Barrett" <dbarrett1-at-austin.rr-dot-com>
>
> Gee, I feel like an advertisement for these things, but the 1N4007, though
>cheap, is a little slow for the 200uS-ish pulse from the coil. I
>experimented with this a year ago and they are inefficient, get hot and die
>fast when used with anything but a 60Hz sine wave due to a very slow reverse
>recovery time. Better to use then UF4007 (A string of 50 for your
>application). More expensive but will work as expected for higher frequency
>stuff like ignition coil rectifiers and DC Tesla coil "De-Q-ing" diodes. Get
>these from Mouser or similar. Digikey does not carry them.
>db
I was just planning to construct a de-Q-ing diode from a string of 1N4007's.
Now I am worried. I thought a de-Q-ing diode basically 'sees' only as highest
frequency BPS_max, say 400-600 Hz ?
Has anybody experience (good or bad) with using 1N4007's in such applications.
The UF4007 certainly is 'better' than the common 1N4007, but also MUCH more
expensive (I need at least 40...).
Any reaction greatly appreciated, Rob Maas