Efficient Laser Supply Circuit

  
Driving Helium-Neon Lasers can be simplified considerably using This power-supply configuration. When power is applied, the laser doesn`t conduct and the voltage across the 190- resistor is zero. However, a resonant circuit and a voltage tripler then produces over 10 kV to turn on the laser.
Efficient Laser Supply Circuit - schematic

HV diodes = Semiech-FM-50, 0.47 uf = Wima (Mannheim, Germany) 3 x 0.15uf, type MXP-20, Ql,OZ = Zelex ZTX-849, Li = Coitlromcs CTX0211128-2, L2 = Puise Engineering PE-92105, Laser = Hughes 3121H-P, 6.5- mA beam current.




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