Car audio amplifier using TDA2003
Car Audio Amplifier Circuit
Description.
A simple low power car stereo amplifier circuit based on TDA 2003 is shown here. The circuit uses cheap, readily available components and it is very easy to construct. TDA2003 is an integrated car radio amplifier from ST Micro electronics that has a lot of good features like short circuit protection for all pins, thermal over range low harmonic distortion, low cross over distortion etc.
In the circuit given here each TDA2003 is wired as a mono amplifier operating from a 12V supply. Resistors R2 and R3 forms a feedback network that sets the amplifiers gain. C7 is the input DC de-coupling capacitor and C5 couples the speaker to the amplifiers output. C4 is used for improving the ripple rejection while C1 and C2 are employed for power supply filtering. C3 and R1 are used for setting the upper frequency cut-off. Network comprising of C6 and R4 is used for frequency stabilization and to prevent oscillation.
Car audio amplifier Circuit diagram.
Car stereo amplifier circuit schematic
Notes.
- Assemble the circuit on a good quality PCB.
- Heat sinks are necessary for both ICs.
- The circuit can be operated from 12V DC.
- S1 is the ON/OFF switch.
Other Audio amplifier circuits in our website,that may interest you;
1. Car Stereo Amplifier Circuit – using TDA1553
2. Audio Amplifier Circuit - using TDA2040
3. 6 Watt Hi Fi Audio Amplifier
4. Mosfet Audio Amplifier Circuit
You may also like:
does all your circuits are work perfectly ??
coz some websites that i had been searched about circuits are have some errors ., that is why its hard to trust now in any websites that they didin’t proven..
Hi Jithin connect all earth point together to -12volt. For clarity of circuit, without showing so many inter connections, the circuits are normally shown like this. all ground points are normally common reference point.
do i join the ten earth points together. and where do i connect the -12v dc.
C3/R1 can be left off if you don’t want the bass boost. These ICs can drive as low as 1.6 ohm spkrs. They can also use up to an 18V supply. C4 doesn’t need to be 470uF; 47uF is fine.
good diagram i like it and the funtioning to