Electronic ballast work what is the minimum solar lamp principle electronic

Working principle of the electronic ballasts electronic ballast is converting power frequency ac power into high frequency ac power converter. The basic working principle is: the power frequency power through radio frequency interference ( RFI) Passive filter, full-wave rectifier and ( Or active) The power factor corrector ( PP



[electronic ballasts Electronic ballast, 电子镇流器) , is one of the ballast, it is to point to use electronic technology to drive electric light source, to produce the required lighting electrical equipment. 】 The working principle of

electronic ballast is converting power frequency ac power into high frequency ac power converter.

the basic working principle is: the power frequency power through radio frequency interference ( RFI【 RFI( 电台频率干扰) , radio frequency interference. 】 ) Filter, full-wave rectifier 【 Full-wave rectifier is a kind of rectifier circuit on communication. 】 And passive ( Or active) The power factor corrector ( PFC English is called the 'Power Factor Correction', meaning 'Power Factor Correction', the Power Factor refers to the effective Power and total Power consumption ( Apparent power) The relationship between the effective power is divided by the total power consumption ( Apparent power) The ratio of the. 】 ( PPFC or APFC) Later, into a dc power supply. Through the DC/AC converter, the output - 20 k 100 KHZ high frequency ac power, to the LC series resonance, which is connected with lamp' In resistance, inductance and capacitance of the series circuit, when the capacitive reactance XC and impedance equals the XL, namely XC = 1 / XL, voltage U and current in the circuit of phase I are the same, pure resistive circuit is present, this phenomenon is called series resonance. 】 Circuit heating filament, at the same time produce resonance voltage on capacitor, add on both ends of tubes, but make the bulb 'discharge' become 'conduction' Conduction is refers to the low resistance to flow through valve or arm forward current state. 】 'State, and then enter a state of luminescence, high frequency inductive limit the increase of current role at this time, guarantee the normal work of the tubes for the lamp voltage and lamp current, in order to improve the reliability, often add various protection circuit, such as abnormal protection, surge voltage Circuit in lightning strike and in on and off often produce high inductance load or large load operating overvoltage, the transient overvoltage ( Or over current) Known as the surge voltage ( Or surge current) , is a kind of transient interference. 】 And current protection, temperature protection and so on.

the classification of the electronic ballasts:

A light pole equipment, according to the installation mode can be divided into: independent type, built in integral;

B, according to the characteristics can be divided into: the ordinary type, high power factor, high performance, cost-effective, adjustable light.