Variable electronic flash light equipment

Details Variable electronic flash light equipment Variable electronic flash light equipment

1981-04-09

1984-08-21

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

315240, 320 1, H05B 4132

Patent

active

044672489

ABSTRACT:
A variable illumination flash apparatus includes a main capacitor in parallel with a flash lamp and power source for normally supporting triggered discharge illumination of the lamp. A plurality of secondary circuits each containing a series-connected silicon controlled rectifier and secondary capacitor are disposed in parallel with the main capacitor and are individually selectively actuatable to store additional electric charge for further supporting lamp illumination. Each secondary circuit is actuated only when additional illumination is required for a subequent flash operation, thereby promoting efficient conservation of the power source in that no power is drawn from the source and stored in the capacitors unless needed for the immediately subsequent flash operation.

REFERENCES:
patent: 3725734 (1973-04-01), Schneider
patent: 4255046 (1981-03-01), Corona

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