Electronic ballasts without toroidal-magnetic-core and fluorescent lamps employ the same
AssigneeMass Technology (H.K.) Ltd.
InventorOnn Fah FOO
Life of this patent
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Abstract
A toroid-free ballast comprising a filter and rectifier circuit (10) coupled with an AC power, a switch and resonant circuit (20) coupled with the filter and rectifier circuit (10), characterized in that, the switch and rectifier circuit (20) comprises a half bridge oscillating circuit composed of two transistors. The present invention has the benefits of being toroid-free, as well as being relatively compact in configuration, low in cost and favourable for the miniaturization of the electronic ballast.
Claims10
A toroid-free ballast comprising a filter and rectifier circuit (10) coupled with an AC power supply, a switch and resonant circuit (20) coupled with the filter and rectifier circuit (10), characterized in that, the switch and rectifier circuit (20) comprises a half oscillating bridge circuit composed of two transistors.
Dependencies are inferred from the claim text.