LM 317 IC

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LM 317 IC

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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.

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LM 317 Power supply

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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

LM 317 Power supply parts list

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LM 317 Regulator Pin out

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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.

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LM 317 Power supply Output voltage

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LM 317 IC Front view

DC power supply using LM-317 IC circuit diagram

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LM 317 IC calculator

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

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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.

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LM 317 Current Regulator calculator

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The End

…… Thank You …….

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