LM317 4-Way Adjustable Linear Power Supply Board

Product Details:

• [Finished Board]: The board has been assembled, welded, and commissioned OK.
• Finished board size: 156 * 96MM, with a maximum height of about 32MM, making it convenient for installation into low chassis or standing above the original PCB.
• LM317/LM337 adjusting tube is used.
• Thicker heat sink for stronger output current capacity.
• The board has one and two circuits outputting positive and negative voltages, typically used for analog circuits.
• The three and four circuits on the board can output positive or negative voltage as needed and are generally used for digital circuits.
• The total of 4 outputs can be adjusted within ± 1.3V~35V range (please be mindful of differential voltage and capacitance withstand voltage for higher voltages).
• The finished board is preset to approximately DC5V before shipping. Adjust it to your desired voltage upon receipt.

Applications:

• Application A: ± 15V for analog circuit, +5V for digital circuit A, and +5V for digital circuit B.
• Application B: ± 15V for analog circuit, +5V for digital circuit A, and -5V for digital circuit B.
• Application C: ± 15V for analog circuit, positive or negative 24V for control circuit, and positive or negative 12-48V for phantom circuit.
• The board's flexibility in adjusting positive and negative output power makes it suitable for various devices like CD players, DVD players, DAC players, or microphone amplifiers.
• It is recommended to have input AC slightly higher than the required output DC for voltage stabilization performance and power consumption. For example, if a DC9V output is needed, use AC10-12V input.

Radiator Test Conditions:

• Input AC12V, output DC12V, current 450mA for long-term testing.
• Input AC18V, output DC15V, current 200mA (higher load current with AC15V input).
• Adjust and modify the radiator yourself if more current is needed.

The finished board size is 156 * 96MM, with a maximum height of about 32MM, making it convenient for installation into low chassis or standing above the original PCB.

product information: