Fluorescent Lamp | Electronic Project Circuits

Posts Tagged ‘fluorescent lamp’

Fluorescent Lamp 8W driver by C1983

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.

Be the first to comment - What do you think? Posted by admin - January 30, 2008 at 11:05 pm

Categories: Automotive, Lighting Tags: compact fluorescent light, fluorescent lamp

A simple inverter for florescent lamps by D882

This inverter is very easy to construct, reliable, and even powerful enough to light up a 15W florescent tube (if you cool your transistor well). The only hard-to-find piece of this baby is the so-called yellow inverter transformer. It’s a miniature high frequency transformer that has a 25mm x 20mm x 5mm ferrite core, 30 turns of primary, 15 turns of feedback, and 250 turns of secondary all concentric, wound on plastic frame than wrapped with a ‘yellow’ adhesive tape. If you can’t find it in your local electronic shops then search for old portable rechargeble florescent lanterns since they have at least one yellow inverter. Of course you can wind a handmade transformer which would do the same but it is a very difficult task when you don’t have an original to inspire and it will still need an appropriate ferrite core.

Read More Source: http://tacashi.tripod.com/elctrncs/inverter/inverter.htm
Thank you.

Be the first to comment - What do you think? Posted by admin - December 22, 2007 at 10:16 pm

Categories: Inverter, Lighting Tags: compact fluorescent light, fluorescent lamp, inverter fluorescent light

12VDC Fluorescent Lamp Inverter with Mosfet

It uses a normal 120 to 6V stepdown transformer in reverse to step 12V to about 350V to drive a lamp without the need to warm the filaments.

Q1 must be installed on a heat sink. A 240V to 10V transformer will work better then the one in the parts list. The problem is that they are hard to find. This circuit can give a nasty (but not too dangerous) shock. Be careful around the output leads.

Source :http://www.aaroncake.net/circuits/flampdrv.asp