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LM337 Positive Negative Dual Adjustable DC Regulated Power Supply Module XR-103, Linear Voltage Stabilizer Board Step Down Voltage Regulator Circuit Board for Electronic Experiment DIY Project, 1 Piec
- Adopts classic LM337 core chip to realize positive and negative symmetrical adjustable voltage output
- Precision potentiometer for smooth and continuous voltage fine-tuning to meet diverse power demands
- Built-in overheat and short-circuit protection function to avoid module burnout during abnormal operation
- Compact PCB layout with reserved terminal pins for easy wiring, welding and circuit debugging
- Ideal for electronic teaching experiments, circuit modification, DIY power source and small device maintenance
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This XR-103 power supply module is built around the mature LM337 linear voltage regulator chip, which can output adjustable positive and negative DC voltage simultaneously, providing symmetrical dual power supply for operational amplifiers, audio circuits, analog testing equipment and other electronic components that require bipolar power input.
Users can rotate the on-board precision variable resistor to accurately adjust the output voltage within the rated range. The integrated protection circuit effectively limits output current and triggers automatic cut-off under short-circuit or overheating conditions, greatly extending the service life of the regulator board and protecting subsequent load equipment from damage.
The finished PCB board comes with clearly marked solder terminals, eliminating complicated peripheral circuit welding for users. It has strong anti-interference and stable ripple suppression performance, delivering clean and pure DC power. Widely used in university electronic teaching laboratories, student DIY production, audio amplifier modification, sensor power supply and small industrial control circuit debugging scenarios.
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- Return for refund within: 30 days
- Return for replacement within: non-replaceable
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