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Transcript
LM 317 IC www.ustudy.in LM 317 IC www.ustudy.in LM 317 Power supply The output is adjustable between 1.25 and 13.5 Volts with a maximum current limit of 1.5 Amps. The LM317K regulator is internally protected from current and thermal overloads. A heat sink will be required for most applications however. www.ustudy.in LM 317 Power supply www.ustudy.in LM 317 Power supply parts list Parts List R1 220 Ω R2 2 KΩ Variable Resistor C1 3300 µf 50v C2 10 µf 25v C3 1 µf 25v C4 0.1 µf D1 100V 5A bridge rectifier D2 IN 4007 D3 IN 4007 IC1 LM 317 T1 18 VAC 2AMP F 250mA www.ustudy.in LM 317 Regulator Pin out www.ustudy.in LM 317 Power supply The diodes D2 and D3 in the circuit prevent damage to the regulator during certain adverse conditions such as the output voltage being higher than the input voltage to the regulator or the capacitor across R2 from discharging through the adjustment terminal of the regulator. www.ustudy.in LM 317 Power supply Output voltage www.ustudy.in LM 317 IC Front view www.ustudy.in DC power supply using LM-317 IC circuit diagram www.ustudy.in LM 317 IC calculator www.ustudy.in LM 317 Voltage Regulator calculator This Voltage Regulator Calculator will work for most voltage regulators with a reference voltage (VREF) of 1.25. For the LM338 and LM350 regulators, 120 ohms is typically used for R1. However, other values such as 150 or 220 ohms can also be used for R1. www.ustudy.in LM 317 Voltage Regulator calculator www.ustudy.in LM 317 Current Regulator calculator This Current Regulator Calculator will work for adjustable regulators with a reference voltage (VREF) of 1.25. To determine the output current from the regulator, enter a value for the program resistor (R1) in ohms and press the "Calculate" button. This will calculate the Output Current in Amperes and the amount of Power Dissipated across R1 in Watts. www.ustudy.in LM 317 Current Regulator calculator www.ustudy.in The End …… Thank You ……. www.ustudy.in
