Electronic and electromagnetic power supply (PRA) for starting fluorescent lamps



Power, W
The connection of lamps
The throttle L15
1х15 W
The throttle L18
1х18 W
The throttle L30
1х30, 2х15 W
The throttle L36
1х36, 2х18 W
The throttle L58
1х58 W
Electronic ballasts 20-40
2х20-40 W
Electronic ballasts 58-65
2х58-65 W


Electronic ballasts

Electronic ballast, or ballasts, are designed for restarting circuits for fluorescent lamps. This method provides higher reliability and durability of the lamps. Also, when using the electronic ballast, no hum and flickering often encountered when starting wiring diagram. Another advantage of using electronic ballasts is their relatively small weight and dimensions.

Connection diagram of electronic ballasts


Electromagnetic chokes

Electromagnetic ballasts for fluorescent lamps are designed for connection of lamps with the use of starter. The starter works only in the moment of supplying power to the ignition system of the lamp, and after he had closed the circuit and the lamp lit, the voltage supplied to the starter is reduced. This connection scheme is less reliable compared with the use of electronic ballasts for lamps, because the starter motors do not have sufficiently long lifetime and must be changed frequently. And without a working starter in this scheme is impossible the ignition of the lamp. Also the frequent switch on/off the lamps creates a high load on the filament, which reduces the lifetime of the lamps. Other disadvantages of using electromatic ballasts are: potential flickering of the lamps, a relatively long run, higher consumption of energy in comparison with electronic ballast, possible rumble of the throttle.

Connection diagram of an electromagnetic inductor