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| Fig. 3 - PCB - 1W Amplifier for Stereo Headphone with IC TDA2822M |
Simple headphone amplifier with few external components that is easy and inexpensive to assemble. This IC is designed for amplifying portable devices such as CD players, portable radios, small speakers, etc.
First of all, we will use it to amplify the audio signal for headphones, that is, we will build a headphone amplifier, whether to listen to music from a mobile phone, connect instruments to study, such as electric guitar, bass guitar, ukulele, guitar, or any other audio signal that needs to be amplified.
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The main component is the TDA2822, a monolithic integrated circuit in an 8-pin lead Mini-dip package. It is intended for use as a dual audio power amplifier in portable audios.
FEATURES
- Dual Low-voltage power amplifier
- Supply voltage down to 1.8V
- Low crossover distortion
- Low quiescent current z Bridge or stereo configuration
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| Fig. 2 - 1W Amplifier for Stereo Headphone with IC TDA2822M |
Material List
- IC1 .................. Integrated Circuits TDA2822M
- R1, R2 ............ 1/4W / 4.7Ω Resistor
- C1, C2 ............ 1uF - 25V Electrolytic capacitor
- C3, C4, C5 ..... 100uF - 25V Electrolytic Capacitor
- C6, C7 ............ 0.1uF Polyester capacitor
- J1, J2 .............. 3.5mm Audio Female Jack Connector
- VR1 ................ 47KΩ Double Potentiometer
- P1 ................... Connector 2 screw terminal 5mm 2 Pins
- Others ............ Wires, Solders, pcb, etc.
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