Mini-fluorescent lamp with automatic on/off

Details Mini-fluorescent lamp with automatic on/off Mini-fluorescent lamp with automatic on/off

1994-10-12

1995-10-17

Lee, Benny

Electric lamp and discharge devices: systems

With radiant energy sensitive control means

Radiant energy responsive load device

315156, 315159, H05B 3702

Patent

active

054593735

ABSTRACT:
A circuit to reduce the amount of time for automatic turn-on of a fluorescent lamp as compared with a thermocouple by using a diode bridge, silicon controlled rectifier, a transistor, and a CdS photoelectric device. By using this relatively inexpensive circuit, a fluorescent lamp is automatically turned on within 2-3 seconds after ambient light falls below a predetermined level. In an alternate embodiment, there is no transistor and a Schmitt trigger is used.

REFERENCES:
patent: 3629683 (1971-12-01), Nuckolls
patent: 4766331 (1988-08-01), Flegel et al.
patent: 4789810 (1988-12-01), Ottenstein

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