1pc 10A AC12V-18V Dual Channel Speaker Protection Board With Relay

 

PLEASE NOTE THE BUYER: There is no wiring diagram, datasheet or instruction manual for this product. Please contact us by email if you need any help, we will try our best to help you, thank you!

Description:

1.Transparent relay: length * width * height = 71 * 48 * 38 MM weight = 60 grams.

2.Adopting fully discrete transistor component design. Two channels each have a set of independent DC detection signals.

3.Unlike IC type UPC1237, the two channels share one detection set. When asymmetrical DC current occurs on both channels at the same time, the speaker cannot be burned out due to the lack of protection effect.

Two sets of 10A high current silver contact relays are used on the board.

4.AC12V power supply. With voltage regulation, the maximum AC voltage is 18V.

 

Note: The power supply of the protection board can not have the same voltage as the previous stage, which will cause it to be damaged by a short circuit.

 

If the input DC voltage of the protection board is> + -0.6 V, IN OUT is switched off.

There is an LED indicator on the board, and the LED flashes when there is a power-on delay or DC protection.

During normal work, the LED is always on.

About the protection board test.

Use a digital universal meter and pull it to the 2-pin position.

Connect the red pin to IN and the black pin to GND, the relay will be disconnected and the LED will flash.

Then connect the black pin to IN and the red pin to GND, the relay is disconnected and the LED flashes. The protection is normal.

 

The wiring is mainly as follows: 3-pin female, AC12-0 is connected to the transformer AC 12V.

The other AMPGND is the ground wire of the power amplifier board.

AMPOUT is the OUT + output signal + of the power amplifier board.

Then the speakers + are the + connected to the speakers.

 

Package:

1pc 10A AC12V-18V dual channel speaker protection board with relay.


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