Electronic ballast and energy saving lamp adopting same
An electronic ballast and capacitor technology, applied in the field of starting lighting equipment, can solve the problems of low power factor, poor anti-interference ability, low reliability, etc. dangerous effect
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[0022] As shown in the attached figure, an electronic ballast has a source filter circuit, a rectifier filter circuit connected to the active filter circuit, a high-frequency resonance circuit connected to the rectification filter circuit, and a negative feedback circuit connected to the high-frequency resonance circuit The circuit is a load circuit connected with the negative feedback circuit; a power factor correction circuit is connected between the rectification filter circuit and the high frequency resonant circuit.
[0023] The active filter circuit is a π-type active filter circuit composed of transformer T1, inductor L2, and capacitors CX1, CX2, CX3, CY1, and CY2; one end of the inductor L2 is connected to the primary winding of the transformer T1, and the other end is grounded through the capacitor CY1, and the capacitor CY2 and CX3 are connected in series at both ends of capacitor CY1 in parallel, capacitor CX1 is connected in parallel at both ends of the power supply...
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