Radio Transmitter

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Monday, April 6, 2009

12VDC Fluorescent Lamp Driver

A number of people have been unable to find the transformer needed for the Black Light project, so I looked around to see if I could find a fluorescent lamp driver that does not require any special components. Here it is. 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.


  • C1 ----- 1 100uf 25V Electrolytic Capacitor
  • C2,C3 -- 2 0.01uf 25V Ceramic Disc Capacitor
  • C4 ----- 1 0.01uf 1KV Ceramic Disc Capacitor
  • R1 ----- 1 1K 1/4W Resistor
  • R2 ----- 1 2.7K 1/4W Resistor
  • Q1 ----- 1 IRF510 MOSFET
  • U1 ----- 1 TLC555 Timer IC
  • T1 ----- 1 6V 300mA Transformer
  • LAMP --- 1 4W Fluorescent Lamp
  • MISC --- 1 Board, Wire, Heatsink For Q1

  • 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.

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