Ballast with zero voltage switching converter
A ballast for powering at least one gas discharge lamp comprises a switching converter and an inverter. Switching converter includes a transistor and a control circuit that provides substantially zero voltage switching of the transistor at a very high frequency. Preferably, control circuit includes...
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| Sprache: | eng |
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| Zusammenfassung: | A ballast for powering at least one gas discharge lamp comprises a switching converter and an inverter. Switching converter includes a transistor and a control circuit that provides substantially zero voltage switching of the transistor at a very high frequency. Preferably, control circuit includes a drive circuit, a turn-on synchronization circuit, a current mirror circuit, a rail voltage regulator circuit (600), and a lamp current regulator circuit. Drive circuit is preferably realized by a circuit arrangement that includes a standard pulse-width modulation integrated circuit. |
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