Connection circuit diagram of four-wire ballast in fluorescent

Published:2011/4/7 3:17:00 Author:Ecco | Keyword: Four-wire , fluorescent, ballast connection | From:SeekIC

Four-wire ballast connection of fluorescent There are four lead wires in four-wire ballast, including main and auxiliary coils. The connection of two lead wires in main coil is the same with second-line ballast, both of them connect between the lamp and power supply in series. The two lead wires in auxiliary coil connect between the starter and the tube in series to help starting. As the number of turns in secondary coil is few, AC impedance is small, if it is mistakenly connected to the main road of the power supply, it will burn lamps and ballasts. Therefore, before the rectifier accessing in circuit, you must see the connection description, to distinguish main and auxiliary coils. Multimeter can also be used as detecting, the higher resistance of coil is main coil.



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