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Registered Member #846
Joined: Tue Jun 19 2007, 08:04PM
Location:
Posts: 40
Is powering a small trigger coil like this one : pretty straight forward? Positive on one side, neg on the other with the high voltage on the remaining lead? Are there minimum and maximum operating voltages? My goal is to connect it to a 9V battery and see what I end up with. Would this even work at all?
Registered Member #396
Joined: Wed Apr 19 2006, 12:55AM
Location: Pittsburgh, PA
Posts: 176
What is the goal? Connections are like you stated. With a 9 volt battery you will get a small voltage pulse off of the third wire, but probably nothing substantial. They are normally run at around 300 volts so I wouldn't go too far over that. Anything smaller and the output will simply decrease (as with any transformer).
Registered Member #89
Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
Will1234 wrote ...
Is powering a small trigger coil like this one : pretty straight forward? Positive on one side, neg on the other with the high voltage on the remaining lead? Are there minimum and maximum operating voltages? My goal is to connect it to a 9V battery and see what I end up with. Would this even work at all?
Not quite. In flash circuits they are powered by rapid discharge of 0.1...1uF cap charged at about 300 volts by SCR or switch. Batery will not do anything, coupling is too poor for that.
Registered Member #846
Joined: Tue Jun 19 2007, 08:04PM
Location:
Posts: 40
I'm trying to trigger 4 disposable camera flash tubes at the same time. Each tube has it's own 330 80uF cap and do fire but it's not consistent in that sometimes all 4 will fire and sometimes only 1 will. Currently I have the Peizo striker from one of those long lighters like you would use to light a grill or fireplace with. Haven't tried this yet but I think that an actual gas grill striker will generate a larger pulse.
Registered Member #89
Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
It's hard to get the pulse to distribute onto 4 flashlamps at once. You should use one of these trigger coils per lamp, or simply a bigger source, like a ignition coil or small TC. You may need to use resistors to equalize the current into all lamps.
Registered Member #56
Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
The 'standard' solution is to series the tubes, and use a proportionally higher voltage to fire/trigger them.
But if you already have separate caps for each coil, you should just need to use a separate trigger coil for each one, and life should be good. You would probably be able to get away with just increasing the trigger cap by 4x, and then using 4 trigger coils in series.
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Strobe Trigger Coil
