The schematic for the 8 Watt driver will show you that this design is quite different from both previous ones. It uses capacitive ballasting like the 2 Watt driver, and a two-transistor saturation-limited oscillator like the 20 Watt design. But note an important difference: This circuit has a choke added in the DC supply, that produces more effects than you may think: Thanks to this choke, mutual conduction between the two transistors is no longer a problem, allowing for a very simple drive scheme and almost lossless operation. The input current becomes almost clean DC, minimizing further filtering requirements. And the waveform becomes a quite clean sine wave, which gives a tremendous advantage in terms of radiated noise! This lamp can be used in a radio station without causing any interference.
Related Links
More circuit about Inverter circuit
More circuit about Lighting
More circuit Fluorescent Lamp
12 Volt Fluorescent Lamp 20W Drivers
12VDC Fluorescent Lamp Inverter with Mosfet
Read More source:
http://ludens.cl/Electron/Fluolamp/fluolamp.html
Thank you.
This entry was posted on Wednesday, January 30th, 2008 at 11:05 pm and is filed under inverter, Lighting.
