Voltage regulator board H-TRONIC 130312 for LM317-T output voltage 1.2–32 V DC (assembled unit with regulator)

Assembled voltage regulator board H-TRONIC 130312 is built around the adjustable LM317-T regulator and provides a compact, ready-to-use solution for generating a stable DC output between 1.2 and 32 V. The unit includes the mounted regulator and all necessary passive components on a small printed circuit board, making it suitable for bench power supplies, prototypes, repairs and embedded applications where a compact adjustable voltage source is required.

Advantages

The assembled board saves time compared with building a regulator circuit from separate parts and ensures correct mounting and spacing for the LM317-T in TO-220 format. It offers a wide output voltage range from 1.2 to 32 V and supports currents up to 1 A, enabling use with a variety of low-power circuits. The compact PCB (approximately 31 mm × 50 mm) and included detailed assembly and usage instructions simplify installation and integration into projects.

Suitable for

• Bench power supplies for hobbyist and laboratory use
• Prototyping and electronics development
• Repair and replacement of defective adjustable power modules
• Embedded devices requiring a small adjustable DC source

Key specifications

• Output voltage range: 1.2–32 V DC
• Maximum output current: 1 A
• Maximum permissible input voltage: 25 V AC (or corresponding DC)
• Regulator type: adjustable linear regulator (LM317-T) mounted in TO-220 format
• PCB dimensions: approx. 31 mm (width) × 50 mm (length)
• Includes mounted regulator and required passive components
• Delivered as an assembled unit with documentation

How to use

Connect the input terminals to a suitably rated unregulated DC or AC source within the specified input voltage range, observing polarity for DC connections. Adjust the output voltage with the on-board potentiometer or adjustment points until the desired output is reached, and verify voltage and current limits with a multimeter before connecting sensitive loads. Secure the TO-220 regulator to a heat sink if the application approaches the maximum current or if prolonged operation at elevated dissipation is expected.

Recommendations

For reliable operation, keep the input voltage at least a few volts higher than the required output to maintain regulation headroom, and ensure adequate cooling when drawing currents near 1 A. Use short, low-resistance wiring and suitable protection (fuses or current limiting) for connected circuits. Refer to the included documentation for detailed mounting and safety information.