Circuit for turning on a charging-completion indicator separate

Details Circuit for turning on a charging-completion indicator separate Circuit for turning on a charging-completion indicator separate

1977-04-27

1979-08-07

LaRoche, Eugene R.

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

315133, 340660, 354127, H05B 4132

Patent

active

041639243

ABSTRACT:
In a flash unit, wherein completion of the charging of a main capacitor from a DC-DC converter is indicated by a first indicator connected to the converter by a first voltage dividing circuit, there is provided a second voltage dividing circuit connected to the DC-DC converter and a switching circuit disposed between the second voltage dividing circuit and the first indicator so that an output voltage sufficient to energize a second (separate) indicator reliably is produced from the second voltage dividing circuit upon operation of the first indicator.

REFERENCES:
patent: 4030108 (1977-06-01), Yazaki et al.

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