Circuit arrangement for operating electrical lamps

Details Circuit arrangement for operating electrical lamps Circuit arrangement for operating electrical lamps

H - Electricity

05

B

H05B 41/26 (2006.01) H05B 39/04 (2006.01) H02M 7/5383 (2006.01)

Patent

CA 2271446

The invention relates to a circuit arrangement for operating electrical lamps which encompasses an invertor with oscillation build-up circuit (trigger generator), comprising diac and drive circuit. The drive circuit comprises a high-pass filter, in particular an RC high-pass filter. As a result, the trigger initiation is shifted closer to the zero crossing of the supply voltage. This means, in turn, that a more sinusoidal power supply current consumption with a smaller proportion of harmonics is obtained. In addition, more stable lamp operation is achieved in combination with power supply segment control dimmers.

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