Flash control device. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Lighting
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The proposed scheme is intended for synchronization of flash units and their remote ignition. All parts are placed inside the body of an industrial flash, and a hole is drilled under the photoresistor R4. Details can be placed on a homemade board.
Most of the details are taken directly from the flash itself (R1, R2, VD1, VD2, C1, T1, H1, C2, R6, H2).
The photoresistor R4 of the FSK-2 brand, indicated in the diagram, can be replaced by any other. In this case, you may have to choose the resistance of the resistor R5 for a clear flash firing.
The capacitance of capacitor C 1 can be in the range of 0,1 ... 0,5 μF, and as a rule, this capacitor is present in all flashes. The capacitance C2 depends on the power H 1.
H2 - flash readiness indicator.
If it is necessary to leave a sync contact, it is connected in parallel with the thyristor VS1. In this case, it is advisable to seal the "eye" of the photoresistor with a piece of electrical tape to eliminate accidental flash firing from other light sources.
Author: L.Getnik, Sumy; Publication: N. Bolshakov, rf.atnn.ru
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