abutler@xxxxxxxxx writes:
<< Is it feasible to get a simple step-up
transformer (i.e.. a Euro power adapter for US appliances) and wire it
to the necessary pins of the T series flashes, or is there more to the
diet than that. If it is as simple as that a AC flash adapter could
probably be put together for less than $20.
>>
Mike,
Yes you could put together such an adapter for very little money.
BUT as you described it, IT COULD BE LETHAL because most line adapters for
appliances are not isolated transformers with seperate secondaries, they are
autotransformers (one big winding with a tap.) If you used one of those you
could easily have the flash and camera connected directly to the line with
lethal consequences. Ideally you should also add a fullwave rectifier
although the flashes do seem to contain an isolating diode that would act as
a half wave rectifier.
Since you live near Silicon Valley you should be able to get an
isolated transformer of the right voltage very easily from a surplus
electronics store. Good ones to try would be Halted and Alltronics. Just make
sure the primary and secondary are isolated. Hookup four 1N4006 diodes (easy
to get Radio Shack ,Frys etc) in a bridge circuit and that is all you need
plius a suitable connector like the turbo cable from Quantum for the
Tflashes. If you don't mind a bulky set up you could klude together 3 similar
low voltage transformers from some old wallwarts. Remove the rectifiers
electronics etc and use a large one for the line side to step down and two
smaller ones connected backwards to step up for the secondary. Hook what used
to be the 110V primaries of the ouput transformers together in series for the
high voltage output. You will have to experiment with which way to hook the
ouputs in series to get the phase right so the output voltage is 220V not
zero! This gives an exceptionally well isolated transformer. If you want
more info just email me off list.
Regards,
Tim Hughes
>>Hi100@xxxxxxx<<
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|