Here is the circuit diagram of superb mini audio power amplifier, That can be power with 4.5 volt dc to 18 volts dc (maximum). This amplifier is based on TDA1015, Product of NXP Semiconductors formerly PHILIPS Semiconductors. The TDA1015 is a monolithic integrated audio amplifier circuit in a 9-lead single in-line (SIL) plastic package. The device is especially designed for portable radio and recorder applications and delivers up to 4 watt in a 4 ohm load impedance. The very low applicable supply voltage of 3,6 V permits 6 V applications.
Parts:
R1330K
R25.6K
R34.7R
C11uF-25V
C21uF-25V
C3100pF
C4100nF-63V
C5182pF
C6224pF
C7100uF-25V
C8100nF-63V
C910uF-25V
C101KuF-25V
IC1TDA1015
Applications:
 |  |
click on the images to enlarge | |
R1330K
R25.6K
R34.7R
C11uF-25V
C21uF-25V
C3100pF
C4100nF-63V
C5182pF
C6224pF
C7100uF-25V
C8100nF-63V
C910uF-25V
C101KuF-25V
IC1TDA1015
Applications:
- In-car use
- Your own unique application
- Power amplifier for audio projects
- For use with portable audio equipment
- Small but powerful multi-purpose amplifier
- Low current drain
- High output power
- Thermal protection
- High input impedance
- Separated preamplifier and power amplifier
- Limited noise behavior at radio frequencies
- Single in-line (SIL) construction for easy mounting
- Quiescent current : 12mA
- Thermal and short circuit protection
- Frequency Response : 60Hz - 15Khz
- Max. output power : 3W (4ohm/12V)
- Input sensitivity : 20-15mV selectable
- Power supply : 4.5 - 15V DC @ 400mA