RZ67: Understanding Flash Triggering

MattKing

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I wasn't aware of that, will have to keep it in mind but I'm curious: how do you "service" a flash circuit? It's not like you clean it or lubricate it. ???

Well I don't service one, but my camera repair technician can.

A synch circuit is essentially a switch. I don't know whether the surfaces of the switch can be cleaned, or whether it is like water pumps in cars - you just have to replace them.
 

MattKing

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As I understand it, a lot of the build up of resistance is due to arcing or other consequences of high trigger voltage flash circuits.

A lot of RB67 were used in studios with high power studio lights. Many of the older studio lights used trigger circuits that involved high voltages and appreciable currents. As an example, I have an old Bowens Monolight location kit where the trigger voltage is 600+ volts, and I am guessing that the current isn't miniscule.

The modern cameras - including many film cameras - use electronic switches. They just get fried by the high trigger voltage flashes.

Older, smaller film cameras were probably not used as much with high power studio lights.
 
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