Novel electronic ballast
An electronic ballast and ballast technology, applied in the electrical field, can solve the problems of inability to adjust lamp brightness, low service life, poor safety performance, etc., and achieve the effects of cost saving, elimination of resonance frequency drift, and flexible resource allocation.
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[0019] In order to further understand and recognize the structure, features and effects of the present invention, a preferred embodiment is now given, and detailed descriptions are as follows in conjunction with the accompanying drawings:
[0020] Such as figure 1 , figure 2 with image 3 As shown, the new electronic ballast described in this embodiment mainly includes a control unit, a filter circuit, a rectifier circuit, a protection circuit, and an output stage circuit. The control unit includes a current sensor, a control circuit, and a voltage sensor. The current sensor and The voltage sensor is used to detect the current and voltage of the load (R0), the control circuit is used to receive the signals of the voltage sensor and the current sensor, and control the operation of the ballast according to the received signal; the output stage circuit includes a half-bridge inverter circuit , a resonant circuit and a filament preheating circuit, the output stage circuit is us...
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