Home > Circuit Blox > Audio Pre-amplifier
UPDATED:.19:27 23 August 2014
FUNCTION BLOCK
FUNCTION

Amplifies low voltage AC audio signal

  • The amplifier has a gain of -40

Supply Voltage (+V): 3 to 18 volts
CIRCUIT DETAILS
+V
Vin
0V
PCB LAYOUT

PCB: 25mm x 25mm

Assembly Instructions
+V
Vout
0V

NOTES:

  • The output signal is amplified and inverted. This inversion should not matter in most cases
  • Audio frequency range approx 20Hz to 50Khz. Can be used to amplify ultrasonic frequencies but at slghtly reduced gain.

    APPLICATIONS:

    • Amplifying guitar pickups
    • Audio effects
    • Signal amplification
    • Ultrasonic tape measure
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