On Friday 24 January 2003 05:38, somebody wrote > Hi, > > prompted by the hints I have now convinced myself that my devices are > > :-) > > - TO66 "TD3F 700 R34": thyristor incorporating a diode, used in the > horizontal deflection circuitry of TV sets, 700V, 3.1A. > > - TO220-like "C106DI": standard thyristor, 400V, 4A. > > Apparently the former come in two flavors, distinguished by the > letters "H" (for "Hinlauf") and "R" (for "Ruecklauf"). How do these > differ internally? There can't be many useful ways of incorporating a > diode into a thyristor while keeping three pins (counting the TO66 > case as one pin :-[).
Briefly, then, we're talking about obsolete junk you're never like to use, unless you fix obsolete junk (Like I do). Internal diodes, and locations of manufacture are two common enough distinctions. Also, some thyrstors have reversed legs (gate with cathode). That might be the "R" suffix You're right, the internal diode is nice, if you could dream up a circuit that needed it. Often, it's a pain. -- Regards, Declan Moriarty. -- Author: Declan Moriarty 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).
