Electric lamp and discharge devices: systems – Discharge device and/or rectifier in the supply circuit – Discharge control discharge device in the supply circuit
Patent
1980-05-05
1982-11-09
La Roche, Eugene R.
Electric lamp and discharge devices: systems
Discharge device and/or rectifier in the supply circuit
Discharge control discharge device in the supply circuit
315104, 315309, 315DIG7, H05B 4136
Patent
active
043587119
ABSTRACT:
A circuit arrangement for starting and operating a discharge lamp by means of an electronic ballast includes a series arrangement of a PTC resistor and an ohmic resistor connected in parallel with an electronic switch of the ballast, with only the PTC resistor being in parallel with a control circuit of the electronic switch. The value of the ohmic resistor is 8 to 12 times the cold resistance of the PTC resistor.
REFERENCES:
patent: 4253043 (1981-02-01), Chermin et al.
Franzblau Bernard
La Roche Eugene R.
Mayer Robert T.
U.S. Philips Corporation
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