Electric lamp and discharge devices: systems – Condenser in the supply circuit – Condenser in shunt to the load device and the supply
Patent
1994-03-04
1995-07-11
Pascal, Robert J.
Electric lamp and discharge devices: systems
Condenser in the supply circuit
Condenser in shunt to the load device and the supply
3541451, H05B 3702
Patent
active
054324106
ABSTRACT:
A series circuit of a pass condenser and a neon lamp operate as a voltage detecting device. A resistance voltage dividing circuit has a connecting point between voltage dividing resistances which are connected to the connecting point between the pass condenser and the neon lamp of the voltage detecting device. The series circuit and resistance voltage dividing circuits are provided between a power source boosting circuit and a main condenser so that, when the main condenser has been fully charged, the neon lamp will conduct, causing a charge completion signal to be outputted and thereby the charging operation will be stopped. When the charge voltage of the main condenser is a flash possible voltage, the neon lamp will conduct for only a short time and the charge completion signal will be output accordingly for only a short time in the form of a pulse. The voltage detecting device thus outputs three types of signals over a single output line to indicate one of three possible charging states.
REFERENCES:
patent: 3162786 (1964-12-01), Kapteyn
patent: 4145637 (1979-03-01), Giese
patent: 5034662 (1991-07-01), Nishida et al.
Watanabe Akira
Yamada Hiroshi
Olympus Optical Co,. Ltd.
Pascal Robert J.
Shingleton Michael B.
Weinstein Louis
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