Wednesday, September 3, 2014

Adjustable Voltage Regulator Using LM337

I need an adjustable voltage regulator for the following laser diodes.

The supply voltage is to be varied from 1.5 V to 3.3 V. I wanted to use LM317 to produce the required voltage but LM317 is out of stock and only LM337 is available in our lab. Therefore, I designed the circuit and choose the value for R2 as follows.

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