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LM317 LM337 Adjustable Step Down Power Supply Module Buck Voltage Converter AC 20V to +/-1.25V-20V

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It is a LM317LM337 three-terminal positive and negative adjustable double three-way rectifier filter stabilized power board voltage regulating module.

1>.Precision voltage regulation.
2>.Buck and regulator modules.
3>.Dual-triple rectifier filtering.

1>.Input voltage: ≤AC 20V
2>.Output voltage: ±1.25~30V
3>. Output current: approx. 500mA
4>. Work Temperature: -25℃~85℃
5>.Work Humidity:0%~95%RH
6>. Size: 78*48*26.8MM

1>. Branches 1 and 2 use the LM317 and LM337 to form a set of positive and negative voltages, each of which allows for individual regulation.
2>. Branch 3 uses LM317 to form a separate power supply and adjust the voltage value separately.
3>.The voltage output size depends on the input voltage value.
4>.If the transformer is a set of dual power supplies, you can short the two jumpers JP1 and JP2 on the reverse side of the circuit board as illustrated, and the output terminal can get a total of 3 outputs.
5>.If the load is too heavy and there is an overheating situation, it needs to be stopped immediately.

  1pcs Filtered and regulated power board.


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LM317 LM337 Adjustable Step Down Power Supply Module Buck Voltage Converter AC 20V to +/-1.25V-20V