Typically, the program resistor (R 1 ) is set at 240 ohms for the LM117, LM317, LM138 and LM150 regulators.įor the LM338 and LM350 regulators, 120 ohms is typically used for the program resistor R 1. This Voltage Regulator Calculator will work for all voltage regulators with a reference voltage (V REF ) of 1.25. You can use this Voltage Regulator Calculator to vary the value of the program resistor (R 1 ) and output set resistor (R 2 ) and calculate the output voltage for the LM317 LM338 LM350 family of three terminal adjustable voltage regulators. Refer to the adjustable regulator data sheets below for more information about the LM317 LM338 LM350 adjustable voltage regulators. The adjustment terminal of the regulator can be bypassed to achieve very high ripple rejection. Normally, no capacitors are needed unless the device is situated more than 150 mm (6 inches) from the input filter capacitors in which case an input bypass capacitor is required.Īn optional output capacitor can be added to improve transient response. The LM317 LM338 LM350 voltage regulators offer full overload protection. Persamaan Ic Lm317 Full Overload Protection You can expect performance of both the line and load regulation using the LM317 LM338 LM350 adjustable voltage regulators over that of standard fixed voltage regulator. Persamaan Ic Lm317 Full Overload Protection.Persamaan Ic Lm317 Series Regulators Are.
