30A Speaker Protection Schematic and PCB

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DIY Electronic circuit today,I take the 30A speaker protection circuit .
This circuit has two relay for switch function connect before speaker input signal.

circuit function is recieved AC signal pass to capacitor for current smoothly then the diode bridge will full wave for convert to DC power before supply to transistor 2N3904 that is current checker and switch to drive BD139
transistor for drive these relay.
You does not worry to build this project as we have completely schematic and PCB that can copy to make the real PCB.

Electronic Parts List

Transistor : 2N3904 2 pcs.
Transistor : BD139 1 pcs.
Capacitor : 100uF / 30 V 2 pcs.
Capacitor : 220uF / 30 V 2 pcs.
Diode : 1N4001 2 pcs.
Diode : 1N1418 4 pcs.
LED 1 pcs.
Resistor : 47K 3 pcs.
Resistor : 1K 1 pcs.Resistor : 10K 1 pcs.
Resistor : 100 ohm 1 pcs.
Resistor : 47K 3 pcs.
Resistor : 150K 3 pcs.
Relay 12VDC/30A 2 pcs.

30A speaker protection circuit

30A Speaker Protection PCB

 

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Audio Speaker Protector using 555

This Circuit of Audio Speaker Protector using IC 555 , Here I will present two pieces of layout scheme audio speakers protector , audio speakers protector serves as speaker protection , and power amplifier . Especially on the power amplifier protection system , in case of surge in the output of the power amplifier , the output power amplifier automatically be disconnected with the speakers . By using the relay as the breaker connection power amplifier with speakers . So that speaker power amplifier secure and safe.Below the layout scheme of Audio speaker protector.


Using ic 555 as a basic circuit, and as a driver relay .

 

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Speaker_Protection_Circuit farklı bir devre daha ekte yer almaktadır