Jul 09

Loud Speaker Overload Protector

Speaker Protector-schematic-diagram

Loud Speaker Overload Protector Circuit Schematic Diagram

Speaker Protector-circuit

Loud Speaker Overload Protector Board and Components Layout

Parts List

Resistor :

  • R1,R2,R8 …………………………….. 1K
  • R3,R7,R9 ……………………………. 10K
  • R4 ……………………………………… 82
  • R5 …………………………………… 180K
  • R6 ……………………………………. 68K
  • R10 …………………………………… 820
  • R11 ………………………………….. 4,7K

Variable Resistor :

  • VR1,VR2 ……………………………… 5K

Capacitor :

  • C1,C2,C3 …………………… 100uF/25V
  • C4,C6 ………………………… 10uF/16V
  • C5 …………………………….. 33uF/16V
  • C7 …………………………… 100uF/50V

Diode :

  • D1,—D6 ………………………… 1N4148
  • D7 …………………………………… LED
  • D8,D9 …………………………… 1N4002
  • D10 ………………………………. ZD 12V

Transistor :

  • TR1,TR2,TR4,TR5 …………….. CS9014
  • TR3 ………………………………. 2N3569
  • TR6 ……………………………….. C1061

Other :

  • RL …………………………. Relay 12V DC