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Subject: Circuit for constant power source

Date: 01/24/00 at 6:29 PM
Posted by: Rao
E-mail: krajkumar@vsnl.com
Message Posted:

Hello,

I am looking for a Circuit for constant pulse energy control switching modew power regulator using LM 317E with vco
Pulse width of the Bulb voltage/current out out will change inversely with the prevailing battery
voltage. Thus energy per pulse is constant. Reruired for a constant beam light intensity for a hand torch with 4 Zinc cardon or Penlite cells.
Bulbs rated 3.2/3.8/4.8/6 with 5 to 10% tolerance.


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