Digital Power Amplifier Protection Board Delay Relay Speaker Protection 300W
2.0 Digital power amplifier speaker protection board parameters:
 
Input voltage: DC12V-16V/AC12-16V
 
Power: 300Wx2
 
Size: 80*50MM
 
With delay and DC protection function (default 1.8V start control, DC sensitivity can be adjusted)
 
 
 
This common power supply DC protection board uses optocouplers. Because optocouplers are isolated between input and output,
 
Electrical signal transmission has the characteristics of unidirectionality, etc., so it has good electrical insulation and anti-interference ability.
 
In addition, because the input end of the optocoupler is a current-type low-impedance component, it has a strong common-mode rejection capability, and achieves the separation of power and audio sources without affecting the audio source!
 
 
 
Operation note:
 
 
1.Power on (red) indicator light is on, working indicator light is on normally, the relay is closed, if there is an impact protection board automatically adjusts the pull-in time (the relay is closed after the current passes)!
 
 
2.The power supply can be the same as the power amplifier. The negative pole of the dual-channel audio source is independent of each line, which is suitable for non-common ground wire and BTL circuit power amplifiers.
 
 
3.The wiring terminal is 7.62 pitch, 1/2W metal film exceeds the standard, and the internal resistance is reduced. It is designed for high current!
 
    
Note:
    There is no delay when the protection board is turned on and off within 15 seconds (the first power on-after turning off, there will be a delay after 15 seconds)!
 
 
 
Package included:
1Pcs

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On 08-Oct-20 at 06:56:13 BST, seller added the following information:

DataCaciques