If it's to protect an electronic shutter camera from an old high voltage
flash, for a few dollars more you can buy a *new* Vivitar 283, Vivitar
285HV (the better buy). Get a Sunpak 383 if you want swivel as well as
tilt. They're all low voltage now. I have a Sunpak 383 but if I had it to
do over, the choice would be a Vivitar 285HV by a hair (I do like the
Sunpak swivel). If you ditch an older high trigger voltage Vivitar to
replace it with a new one, *keep* the battery holder and use it to preload
a second set of batteries. My Sunpak handle flashes (544 and 555) have
battery holders, and it's much, much faster than changing cells one at a time!
Paramount has cords with voltage protection:
http://www.paramountcords.com/vp.htm
Here's the stuff made by Wein for the same purpose (hot shoe and monolight):
http://www.saundersphoto.com/html/wein.htm
BTW, Olympus sells one of these devices for a hot shoe. However, it's a
"pass-through" made by Wein, badged with Oly's logo, and with a price
appropriately much higher (typical with re-badged "pass-through" items).
-- John
At 10:55 AM 6/14/03, Mickey Trageser wrote:
Could you design and build a voltage limiting, polarity correcting
'safe-sync' device to make it safe to use the old high trigger voltage flash
units on more modern cameras? They seem to start around $40 commercially.
Personally, I'd like to see it in-line in a PC flash cord. Or maybe draw up
a circuit and parts list and I could make one myself?
Now that's not asking much, is it? ;-)
-Mickey
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