Class-AB Headphone Amplifier Circuit

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This is the circuit diagram of Class-AB headphone amplifier which built using 3 transistors of BC549 and BC559. The circuit is very simple and will give you good audio performance.

The power consumption of this headphone amplifier circuit is claimed to be very low. Two pieces of AA battery will supply the circuit for long time.
Class-AB Headphone Amplifier circuit diagram


Components List:
R1 - 100K
R2 - 330
R3 - 100
R4 - 22 (2 - 4.5V)
R4 - 100 (5 - 12V)
C1 - 4.7uF		C2 - 4.7uFC3 - 100 - 1000uF
C4 - 220uF
P1 - 100K
D1, D2 - 1N4148
Q1, Q2 - BC549
Q3 - BC559


Specifications:
Power Supply Voltage: 2 - 12V
Power Consumption: 10mA/3V - 30mA/12V (measurements taken using a stereo version)
Output Power: 300mW

The circuit can be used for common electronic devices such as radios, CD/DVD Players, computers, audio/video players, ipods etc.

Circuit Source: Class-AB Headphone Amplifier Circuit

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