Fluorescent energy-saving electronic ballast circuit


Posted on Dec 11, 2010

Electronic ballasts have a wide operating voltage range, fast start working no noise, no flicker, save energy and so on. It has been more and more people to accept. The circuit


Fluorescent energy-saving electronic ballast circuit
Click here to download the full size of the above Circuit.

shown in FIG is currently available on popular electronic ballast typical circuit. Figure 10-3, VD1 ~ VD4, c1, G form a bridge rectifier and filter circuit, complete 300V AC-to-DC conversion zzov. Horse, start-up wind resistance, to provide turn-VT2 bias voltage, thereby stimulating VT1, VTZ formed high-frequency self-oscillation. B for the buck produce self-inductance choke, C3, VD5, VD6, G composition soft-start circuitry, so that the establishment of the circuit operating point to the delay, so that the lamp filament preheating plus long, in order to facilitate the rapid start lamp, extending its life.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

500mW FM transmitter
PC terminal using a TV
Linear optocoupler for instrumentation
Night Safety Light For Autos
Cosmic Ray Detector using Fluorescent Tubes
3 phase ac motor speed control circuit
Microchips MCP73113 Li-Ion Battery Charger
hartley oscillators
380MHz RF2175 linear amplifier circuit diagram
Vibration sensing Voice FM radio transmitter circuit ND-2 TM-801A



Top