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Green circuit board with two blue adjustable potentiometers and silver terminal pins

SMUGDESK

SMUGDESK XR-103 LM337 Dual Adjustable Power Supply Module

SKU CH-YQS0-NK049

Dual adjustable LM337 regulator board delivers symmetrical positive and negative DC voltage with precision potentiometer control and built-in overheat and short-circuit protection for DIY experiments

  • Symmetrical dual output for op-amp circuits
  • LM337 core delivers adjustable positive and negative voltage
  • Precision potentiometer enables smooth voltage fine-tuning
  • Integrated overheat and short-circuit protection safeguards components
  • Compact PCB with marked terminals simplifies wiring and debugging

Dual adjustable LM337 power module

The XR-103 board uses an LM337 regulator chip to deliver simultaneous positive and negative DC output. It is designed for experimenters, students and technicians who need a compact bipolar supply for op-amp circuits, audio projects or sensor testing. The precision potentiometer allows smooth voltage adjustment across the rated range. Built-in overheat and short-circuit protection helps prevent damage during fault conditions.

Wiring and load checks before use

Verify that your input source can supply the required voltage headroom for the linear regulator to operate correctly. Confirm that the connected load stays within the module’s current capability to avoid triggering the protection circuit. Ensure solder terminals are securely attached and polarity is observed before powering the circuit. The compact PCB layout leaves limited space for additional components, so plan the enclosure accordingly.

Terminal pins and protection features

Clearly marked solder terminals simplify wiring and eliminate the need for a separate peripheral board. The integrated protection circuit automatically cuts output during short-circuit or overheating events, safeguarding both the module and downstream devices. This combination of accessible terminals and automatic safety shutdown supports rapid prototyping and reliable bench use. No additional software or accessories are included.

Highlights

  • Symmetrical dual output for op-amp circuits
  • LM337 core delivers adjustable positive and negative voltage
  • Precision potentiometer enables smooth voltage fine-tuning
  • Integrated overheat and short-circuit protection safeguards components
  • Compact PCB with marked terminals simplifies wiring and debugging

Specifications

No published specifications for this item yet.

Questions about this item

What comes with the XR-103 module and what must be sourced separately?

The finished XR-103 board with solder terminals is supplied; you must provide a DC input source, enclosure, wiring and any load components for your circuit.

Which XR-103 version or capacity should I choose for my project?

Only the single XR-103 variant based on the LM337 regulator is offered; select it when you need symmetrical positive and negative adjustable output.

What does the LM337-based dual output mean when the XR-103 is installed in a real circuit?

It delivers simultaneous positive and negative DC rails adjustable via the on-board potentiometer, with built-in overheat and short-circuit protection for stable analog power.

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