The trigger pulse is generated on a different board, then is conditioned with a 4049 cmos chip. It seems weak, but there are so many other problems, I am having trouble figuring out what it is supposed to look like. The 4049 is powered by a separate 5 volt regulator, but the input to it is only a 2 volt pulse, which seems too weak. > > How is the trigger pulse generated and what does it look like right > now? If the original MOSFET was shorted, it probably also shorted > either drain or source to the gate. This might have killed the driver > circuit either by overloading it (short to ground) or by bypassing the > high voltage pulse directly into the driver.... > > > SLA> the 840 with regard to the trigger pulse? Most of these type tools use an > SLA> SCR; this is my first experience with a mosfet fired transmitter. > > > Uwe. > > -- > Author: Uwe Zimmermann > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB CHIPDIR-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). >
-- Author: Syd Levine \(AnaLog\) INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB CHIPDIR-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
