Wednesday, April 10, 2013

12 V AUDIO AMPLIFIER WITH TRANSISTOR ELECTRONIC DIAGRAM

12 V AUDIO AMPLIFIER WITH TRANSISTOR ELECTRONIC DIAGRAM

In use, R9 should be carefully adjusted to provide minimal audible signal cross-over distortion consistent with minimal measured quiescent current consumption; a good compromise is to set the quiescent current at about 10-15 mA.To measure this current, wire a DC current meter temporarily in series with the collector of Q3.

List Component

  • P1_____________10K Log.Potentiometer
  • R1,R2__________33K 1/4W Resistors
  • R3_____________33R 1/4W Resistor
  • R4_____________15K 1/4W Resistor
  • R5,R6___________1K 1/4W Resistors
  • R7____________680R 1/4W Resistor
  • R8____________120R 1/2W Resistor
  • R9____________100R 1/2W Trimmer Cermet
  • C1,C2__________10µF 63V Electrolytic Capacitors
  • C3____________100µF 25V Electrolytic Capacitor
  • C4,C7_________470µF 25V Electrolytic Capacitors
  • C5_____________47pF 63V Ceramic Capacitor
  • C6____________220nF 63V Polyester Capacitor
  • C8___________1000µF 25V Electrolytic Capacitor
  • D1___________1N4148 75V 150mA Diode
  • Q1____________BC560C 45V 100mA PNP Low noise High gain Transistor
  • Q2____________BC337 45V 800mA NPN Transistor
  • Q3____________TIP31A 60V 4A NPN Transistor
  • Q4 ___________TIP32A 60V 4A PNP Transistor
  • SW1___________SPST switch

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