Car stereo amplifier is very important, as it makes sound signal strong and give power to speaker so they work good.
Also, the IC TDA1553 chip gives this car stereo amplifier circuit strong Class B amplification; designers developed this compact chip for car radios and it performs well while requiring only a few external components.
Furthermore, it can run two 4 ohm speakers and sound come out strong and clear and music sounds better.
Circuit Working:
Parts List:
| Components | Values | Quantity |
|---|---|---|
| Capacitors | Ceramic 100nF | 1 |
| Ceramic 220nF | 2 | |
| Electrolytic 2200μF 25V | 1 | |
| Electrolytic 4.7μF 25V | 1 | |
| Semiconductors | IC TDA1553 | 1 |
| 4Ω speakers | 2 | |
| On Off switch | 1 |
The above circuit diagram shows TDA1553 IC, some capacitors and two 4 ohm speakers which works with 12V DC and is usually from car battery.
Here, C1 and C2 capacitors help clean and steady the power and removes noise and then audio input right goes to pin 1 and left goes to pin 13 on IC.
Then C4 and C5 block DC from input and keep signal clean and TDA1553 works in BTL mode by using two amps for each channel and this gives more power.
Amplifier then sends strong sound to speaker1 right and speaker2 left.
Hence, there is also an On/Off switch, which can change mode with standby, mute or normal and it is good for saving power and cutting noise.
Formulas with Calculations:
Power Output (Pout):
For Class B amplifier is in bridge mode:
Pout = Vsupply² / (2 × Rload)
here,
- Vsupply is 12V
- Rload is 4Ω
So,
Pout = 12² / (2 × 4) = 144 / 8 = 18W per channel
Total = 18W × 2 = 36W for 2 channels
Heat Dissipation:
Amplifier makes heat when working.
Heat = Power from supply − Power to speakers
Pheat = Psupply − Pout
Psupply = Isupply × Vsupply
where,
- Pout is 36W
So use heat sink for IC which helps keep it cool and safe.
How to Build:
To build a Car Stereo Amplifier Circuit using IC TDA1553 follow the below mentioned steps for assembling and connections
- First, gather all the parts as shown in circuit diagram
- Next, pin 1 of IC1 connects to C4 and GND
- After that, pin 2, 5, 8 of IC1 connects to GND and pin 3 of IC1 goes to +12V and also C1 and C2 connects between +12V and GND
- Then pin 4 of IC1 connects one side of 4Ω Speaker1 and other side of Speaker1 goes to pin 6 of IC1
- Now pin 7 of IC1 connects one side of 4Ω Speaker and other side of Speaker2 connects to pin 9 of IC1
- Further, pin 10 of IC1 goes to +12V
- Next, pin 11 of IC1 goes to one side of switch S1 and other side of S1 connects to +12V
- After that, pin 12 of IC1 connects to positive of C3 and negative of C3 goes to GND
- Finally, pin 13 of IC1 connects to C5 and GND
Conclusion:
Overall, this Car Stereo Amplifier Circuit using IC TDA1553 is small and strong project, as it is easy to build and sound is clear and loud.
Also, it is good for car audio upgrade or DIY and the circuit keeps it cool and use steady power for best working.
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