Re: SSTC bridge driver

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

Original poster: "Shaun Epp" <scepp-at-mts-dot-net> 

I've got the answer to the ringing problem.  SNUBBER circuit!  I use a 51
ohm 1/4 watt resistor in series with a 1 nF capacitor. I put this combo
across the gate transformer outputs and it gives a good response.   On my
plasmasonic board I'm running at 240 khz and the ringing was about 13Mhz.

I hope this helps,

Shaun Epp

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, January 31, 2004 12:31 PM
Subject: Re: SSTC bridge driver


 > Original poster: herwig.roscher-at-gmx.de
 >
 >
 > gtyler-at-drummond-dot-org.za wrote:
 >
 >  > to use a small (10-25mm ) ferrite toriod.I do this all the time with no
 >  > ringing problems, you always need a series gate resistor to stop
 >  > parasitic oscillations though.
 >
 > George,
 >
 > I am using the F-114A-77 ones, Dan McCauley has recommended. They
 > work without problems until now (knock at wood), but there is a
 > certain amount of ringing - despite I am using 15 Ohm gate resistors.
 >
 > Cheers,
 >
 > Herwig
 >