Electric lamp and discharge devices: systems – Time-controlled
Patent
1978-02-17
1980-02-19
La Roche, Eugene R.
Electric lamp and discharge devices: systems
Time-controlled
3071414, 315119, 315240, 315340, 315362, 361198, H05B 4136
Patent
active
041896653
ABSTRACT:
The invention relates to a sun lamp provided with a timer circuit that includes a capacitor. As soon as the capacitor reaches a certain charge condition the sun lamp is switched-off.
The sun lamp also comprises a safety circuit responsive to a given level of current through the capacitor, which indicates a defect in the timer circuit 2, to rapidly terminate the irradiation.
REFERENCES:
patent: 3909659 (1975-09-01), van der Meulen
patent: 4013922 (1977-03-01), van der Meulen
Briody Thomas A.
Franzblau Bernard
La Roche Eugene R.
Streeter William J.
U.S. Philips Corporation
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