Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Patent
1996-05-13
1997-09-02
Pascal, Robert
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Automatic regulation
315307, 315291, 315 82, 315 77, 315DIG7, 315225, G05F 100
Patent
active
056636130
ABSTRACT:
A lighting circuit supplies an input voltage from a battery to a discharge lamp after the input voltage has been sent via a DC power supply section to a DC-AC converter. This lighting circuit comprises a lighting detector for detecting if the discharge lamp is lighted, an input-voltage monitor circuit for detecting the input voltage to the DC power supply section and checking if the input voltage lies within an allowable range, and a stable power supply circuit and a switch section for supplying power to the discharge lamp or inhibiting the power supply thereto in accordance with a signal from the input-voltage monitor circuit. The input-voltage monitor circuit performs variable control on a reference value to be compared with the input voltage, in accordance with a signal from the lighting detector.
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Toda Atsushi
Yamashita Masayasu
Koito Manufacturing Co. Ltd.
Pascal Robert
Philogene Haissa
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