Features:
Use 2MM thick substrate double-sided PCB, copper foil thickness 75U.
The copper traces from the relay contacts to the horn terminals are very short, and the double-sided overlapping ultra-wide copper foil traces are designed. The sum of the widths of the two copper foil traces is 20 MM
The signal channel adopts Japan Omron 8-pin single-plated silver-plated contact relay (contact current 16A) to ensure reliability
Two channel power supply, detection, ground completely independent (Can be divided into two separate mono boards by hand.) The board can be directly attached to the speaker terminal and fixed with a nut. No welding is required
The line supports BTL amplifier detection (The GND of the protection board needs to be connected to the GND of the BTL power amplifier board. It only supports dual power BTL amplifiers. The single power BTL amplifier does not support DC detection).
Function: Delayed pull-in (about 5 seconds) DC (neutral point voltage) detection (starting voltage about 1.5V).
Supply voltage: AC: 12V-0V-12V
Size:115MM*62MM
Speaker terminal hole spacing: 30MM
Not BTL Amplifier: Solder Joint Diagram:
Single power supply connection method: