Re: Function of component in flash tube trigger circuit?

This should be the trigger transformer. I have rarely seen these go bad.
I have had lamp and capacitor failures on flashes.

The output of the trigger transformer is normaly a few thousand volts at
extremely low current. The trigger pulse is usually in the order of
about 50 to about 500 ns depending on the flash output power demand.

--

JANA
_____


"N_Cook" <diverse@xxxxxxxxx> wrote in message
news:fv49ki$qlj$1@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
http://home.graffiti.net/diverse:graffiti.net/sf2.jpg
No markings, a black potted box 7x7x 15mm external dimensions.
If a stepup transformer , why so small?

0.3 ohms between blue and red lead and 144 ohms between blue and brown
lead
which goes directly to the trigger filament around the flash tube.
Red goes to ground and blue wire goes via 0.2uF, 250V capacitor to the
SCR
cathode. 22mH and 20uH inductance

--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/






.