This calculator is used to find the value of the voltage adjustment resistor required to set the output of an LM317 to a specified level. Typically R1 is 220 ohms or 240 ohms, but it could be some other value such as 150 or 470 ohms. Select a value for R2 and hit the Calculate button. The LM317 output value is reported in volts. Remember that the input voltage to the LM317 must be at least 1.5v greater than the output voltage.
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This entry was posted on Friday, August 10th, 2007 at 10:58 am and is filed under LM317, Power supply, Variable Regulator.
