Circuit arrangement for adjusting the operating voltage of...

H - Electricity – 05 – B

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H05B 41/36 (2006.01) H05B 41/392 (2006.01)

Patent

CA 1256935

PHD 84-076 11 ABSTRACT: In a circuit arrangement for adjusting the operating voltage of high-pressure gas discharge lamps to a given nominal value, comprising a controllable current limiter arranged in series with the lamp and an adjustment circuit (3) controlling the latter, whose output signal is determined by the difference between a given desired value determining the nominal lamp operating voltage and an actual value dependent upon the instantaneous lamp operating voltage, there is arranged parallel to the lamp (1) a heating element (5), which is in thermal contact with a temperature-dependent element (6), which produces the actual voltage dependent upon the instantaneous lamp operating voltage.

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