August 02, 2009

LASER Power Supply

Diagram:-

This is the schematic of the laser power supply
click on the image for better quality........................

Parts:-

Part
Total Qty.
Description
Substitutions
R1110 Ohm 10W Or Greater Resistor
R21Ballast Resistor, See "Notes"
D1, D2, D331N4007 Silicon Diode
C1, C2, C330.1 uF 2000V Capacitor
T119V 1A Transformer
S11115V 2A SPST Switch
MISC1Case, Wire, Binding Posts (for output), Line Cord

Notes

  1. T1 is an ordinary 9V 1A transformer connected backwards for step up.
  2. R1 MUST be installed on a LARGE heatsink. A good heatsink is the metal case the supply is built in.
  3. R2 Protects the laser tube from excess current. It should be soldered directly to the anode terminal on the tube. To find R2, start with a 500K 10W resistor and work down until the tube lights and remains stable.
  4. If you have trouble with the tube not starting easily, use a longer anode lead that is wrapped around the tube.
  5. Depending on the transformer you use, the circuit may or may not work. I cannot guarantee the operation of this circuit. Build at your own risk. Some transformers contain very few secondary windings which will quickly saturate the core and basically act like a direct short. The more secondary windings (that is, primary in this circuit) the better.

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Electronics is the study and use of electrical that operate by controlling the flow of electrons or other electrically charged particles in devices such as thermionic valves. and semiconductors. The pure study of such devices is considered as a branch of physics, while the design and construction electronic circuits to solve practical problems is called electronic engineering.

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