Method for controlling start procedure of electric ballast of high-strength air discharge lamp
A technology for electronic ballasts and gas discharge lamps, which is applied in the field of start-up process control of electronic ballasts, can solve problems such as bulb deviation, achieve smooth start-up process, shorten the time of over-power operation of bulbs, and ensure accuracy and reliability. sexual effect
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[0015] Such as figure 1 As shown, the control system of the starting process control method of the electronic ballast of the present invention includes a microcontroller and a drive chip, and the microcontroller is equipped with an analog-digital signal converter and an EEPROM. The main circuit of the ballast includes a DC-DC conversion circuit and a full-bridge inverter circuit. The DC-DC conversion circuit boosts the DC voltage to obtain a DC voltage suitable for bulb operation. This DC voltage is then converted into an AC through the full-bridge inverter circuit. Voltage is supplied to the bulb to make it work. The microcontroller is connected to the DC-DC conversion circuit and the full-bridge inverter circuit, and the drive chip is respectively connected with the microcontroller and the DC-DC conversion circuit.
[0016] The main principle of the starting process control method of the present invention is to judge the state of the lamp according to the lamp resistance. By sa...
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