Adjustable Voltage Regulator DIY Kit LM317 1.25V to 12V - 1.5A

C$3.99

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GTIN: 4260474035922 SKU: 26592 Categories: , , Tag:

Overview

This Adjustable Voltage Regulator is a DIY soldering kit using the LM317 linear regulator. The assembled circuit provides an adjustable DC output in the range of approximately 1.25 V to 12 V with a maximum output current of around 1.5 A. The kit can accept either AC or DC input voltage, requiring the input to be at least 3 V higher than the desired output and not exceeding 17 V AC or 25 V DC. The regulator includes internal protections for short-circuit and thermal overload.

This kit is intended for hands-on learning of analog power regulation and basic circuit construction with through-hole components. Correct resistor values are included to set the adjustment range, and output voltage range can be modified by replacing these resistors and referring to the LM317 datasheet for calculation formulas.

Key Features

• Adjustable output voltage from approximately 1.25 V to 12 V DC
• Based on the LM317 three-terminal positive linear regulator
• Accepts AC or DC input voltage
• Maximum output current around 1.5 A under appropriate thermal conditions
• Internal short-circuit and thermal overload protection in the regulator IC
• Through-hole components for manual soldering practice
• Includes resistors to set the standard adjustment range

Electrical and Usage Notes

• The input voltage must exceed the desired output by at least 3 V to maintain regulation
• Do not exceed 17 V AC or 25 V DC on the input
• Power dissipation increases with greater input-to-output voltage differential; ensure adequate heat dissipation
• Output voltage adjustment range is determined by resistor values; alternate resistors can extend range with correct calculation
• The LM317 regulator requires external components to set output voltage and maintain stability

Typical Applications

• Adjustable bench power supply for electronics projects
• Educational soldering and analog circuit practice
• Powering low-current circuits requiring variable DC voltage
• Test rigs requiring adjustable voltage source
• Prototyping basic linear regulator designs

Specifications

Regulator Type LM317 adjustable linear regulator
Output Voltage Range Approximately 1.25 V to 12 V DC
Maximum Output Current Approximately 1.5 A (dependent on thermal conditions)
Input Voltage AC or DC input, at least 3 V above output; not above 17 V AC or 25 V DC
Regulator Protections Short-circuit protection, thermal overload protection (internal to LM317)
Kit Type DIY soldering kit with through-hole components
Adjustment Components Preset resistors included; replaceable for custom ranges

Please refer to the LM317 datasheet to find out how to calculate them.

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