Warning light control

Details Warning light control Warning light control

1975-06-02

1977-03-22

Chatmon, Jr., Saxfield

Electric lamp and discharge devices: systems

Condenser in the supply circuit

Condenser in shunt to the load device and the supply

315209CD, 315209SC, 315239, 315241P, H05B 3700, H05B 3900, H05B 4114

Patent

active

040139212

ABSTRACT:
The visibility of warning lights employing flash tubes is enhanced by control circuitry which generates closely spaced trigger pulse pairs for energizing the tubes to thereby produce double flashes. Noticeability of the warning light may be enhanced by addition thereto of a noise maker which operates off the same power supply that provides a high voltage for operating the flash tube or tubes.

REFERENCES:
patent: 2977508 (1961-03-01), Germeshausen
patent: 3171057 (1965-02-01), Buckingham
patent: 3286128 (1966-10-01), Ward
patent: 3316445 (1967-04-01), Ahrons
patent: 3443154 (1969-05-01), Hoekstra et al.
patent: 3886436 (1975-05-01), Wadlington
patent: 3898514 (1975-08-01), Takahashi
Inside The Electronic Photoflash, Radio Electronics, Mar., 1961 pp. 36-39.

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