Position: Index > Amplifier Circuit >

Portable microphone preamplifier circuit description

2015-01-04 22:20  
Declaration:We aim to transmit more information by carrying articles . We will delete it soon, if we are involved in the problems of article content ,copyright or other problems.


This article is a portable microphone preamplifier circuit description. Master the principle is very effective method is to combine text read schematics. The  circuit  is very simple, very cheap, very effective.

 

 
P1______________2K2  Linear PotentiometerMicrophone PreamplifierR1,R2,R3______100K   1/4W Resistors
R4______________8K2  1/4W Resistor
R5_____________68R   1/4W Resistor
R6______________6K8  1/4W Resistor
R7,R8___________1K   1/4W Resistors
R9____________150R   1/4W Resistor

C1______________1μF   63V Polyester Capacitor
C2,C3,C4______100μF   25V Electrolytic Capacitors
C5_____________22μF   25V Electrolytic Capacitor

Q1___________BC560C   45V 100mA Low noise High gain PNP Transistor
Q2___________BC550C   45V 100mA Low noise High gain NPN Transistor

J1_____________Jack socket (Mono 3 or 6 mm.)

 


Reprinted Url Of This Article:
http://circuits.radio-electronics.co/audio/portable-microphone-preamplifier/