| 摘要 |
A VCC circuit of an inverter for an LCD(Liquid Crystal Display) backlight is provided to simplify a structure of the VCC circuit by removing a standard voltage generator and an error amplifier from the structure. A VCC circuit of an inverter for an LCD backlight includes an input terminal, a ground, a first resistor group(101), a second resistor group(102), a third resistor group(103), a smoothing condenser(C1), a Zener diode(ZD1), a transistor(Q1), and an output terminal. The first resistor group is connected to the smoothing condenser between the input terminal and the ground. A cathode of the Zener diode is connected between the first resistor group and the smoothing condenser. An anode of the Zener diode is grounded. The transistor controls voltage. A base of the transistor is connected to the cathode of the Zener diode. A collector of the transistor is connected to the second resistor group, the third resistor group, and the smoothing condenser. An emitter of the transistor is connected to the output terminal. |
