FIELD: optics.
SUBSTANCE: device has protective assembly, mounted between transformer of electric energy and parallel/serial chains of emitting elements with current limiters. Current limiter is made in form of serially connected preventer, inductiveness coil, force key, control input of which through resistor is connected to output of voltage detector. Inputs of voltage detector and output of force key are connected to outputs of electric energy transformation device, which additionally has varistor, mounted in parallel between rectifier and power voltage stabilizer.
EFFECT: higher reliability.
3 cl, 3 dwg
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