Description
What it is
The LM317 is a linear voltage regulator capable of providing a stabilized output voltage. It is used to power electronic circuits that require a precise and constant voltage.
Features
- Type: Linear Voltage Regulator
- Model: LM317
- Input Voltage Range: 1.5V ~ 37V DC
- Adjustable Output Voltage: Check datasheet
- SKU: ARD00341
- Price: 8.24 €
What it is for
The LM317 is ideal for stabilizing voltage in various electronic circuits. It can be used to power LEDs, microcontrollers like Arduino and ESP, and other components that require a precise voltage. It is a versatile component for DIY projects and for those approaching the world of electronics.
Tutorial: How to Use LM317
The LM317 voltage regulator is ideal for stabilizing voltage in various electronic circuits. Useful for beginners and intermediates working with variable power supplies.
What you need
- LM317
- 220 Ohm resistor
- 10 kOhm resistor
- 100 nF capacitance
- Power supply
Steps
- Check the datasheet for your LM317 specifications.
- Connect the positive power supply to pin 3.
- Connect pin 1 to pin 2 through a 220 Ohm resistor.
- Connect pin 2 to ground.
- Connect pin 1 to ground through a 10 kOhm resistor.
- Connect ground to the ground of your circuit.
- Check the voltage at pin 1 and pin 2.
- If necessary, adjust the voltage by varying the 10 kOhm resistor.
Mini project
Create a simple power supply circuit for an LED. Connect the LM317 output to a resistor and then to the LED.
Common mistakes
- Omit the 220 Ohm resistor.
- Connect pin 3 to ground.
- Do not check the voltage.
- Omit the 10 kOhm resistor.
Recommended accessories
- LED
- Variable Resistor
- Multimeter
- Variable Power Supply
Frequently asked questions
Can I use LM317 with output voltages higher than 37V?
Check the datasheet for the maximum output specification.
How much heat can LM317 generate?
Check the datasheet for the heat dissipation specification.
Can I connect multiple LM317 in parallel?
Check the datasheet if it is possible to connect them in parallel.









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