To make one cool and Simple 10 Watt Amplifier Circuit using IC TDA2003 is too not hard.
This circuit is good for small project for kids or for someone new in electronics.
It is quite simple and very easy to build.
TDA2004 chip is good and already have many parts inside for good sound.
We only need few more things then we can get strong and clean amplifier where we can play music loud with speaker and enjoy.
Circuit Overview:
TDA2004 power IC is main part of this easy 10 watt amplifier which gives very good sound.
This small project can give big sound up to 10 watt.
It is good for many uses with sound coming out nice and strong.
Circuit Working:
Parts List:
| Category | Description | Quantity |
|---|---|---|
| Resistors | 100kΩ, 220Ω, 2.2Ω, 1Ω (all 1/4 W CFR) | 1 each |
| Potentiometer 10k (Volume Control) | 1 | |
| Capacitors | Ceramic 0.1µF | 2 |
| Electrolytic 220µF 25V | 1 | |
| Electrolytic 470µF 25V | 1 | |
| Semiconductors | IC TDA2003 | 1 |
| Speaker 8Ω 10 Watt | 1 | |
| SPDT ON/OFF Switch | 1 |
Potentiometer work like changing resistor when we turn it, sound become loud or low.
When we change pot the resistance of signal changes and this controls input sound and volume at pin 1 of IC1.
Pin 3 of IC1 connects to ground and gives stable point for volume control.
Speaker connect to pin 4 of IC1which is the output.
Capacitor C4 470uF 16V stops DC but let music AC connects to speaker.
For good sound and right matching C1 0.1F capacitor and R4 1 ohm resistor connects to ground.
Pin 5 of IC1 connect to +12V by switch S1.
We can use 12V battery or 12V DC power to run this.
Power used by circuit is:
P = V² / R
where,
- V is voltage
- R is resistance.
IC1 make heat so big heatsink is good which stops IC from getting too hot.
Heatsink help take away heat when amplifier work.
Heat made formula is:
Q = m × c × ΔT
Where m is mass c is heat value and ΔT is temp change.
Circuit Construction with Formulas:
Input Stage:
- Pin 1 of TDA2004 connect to ground with 100k resistor.
- Use 10k pot and capacitor C1, C2 to send music signal to pin 1 of IC1.
- Formula: Rtotal = Rfixed + Rvariable
Volume Control:
- Use potentiometer to control volume.
- Ground pin 3 of IC1 to make volume control work.
- Formula: Vout = Vin × Rvariable / Rtotal
Speaker Output:
- Pin 4 of IC1 is for speaker output.
- Connect this to speaker using 470uF 16V capacitor.
- Use 0.1F capacitor and 1 ohm resistor to ground for good sound.
- Formula: Vout = Rspeaker / (Rtotal + Rspeaker)
- Switch S1 connect pin 5 of IC1 to +12V power.
- Use 12V battery or 12V DC adapter to power it.
- Formula: P = V² / R
Heat Management:
- Use big heatsink on IC1 so heat can go away.
- Formula: Q = m × c × ΔT
Conclusion:
Anyone can build a Simple 10 Watt Amplifier Circuit using IC TDA2003 for good sound.
Just follow the above steps and use the above easy formulas.
This project is cheap and fun way to learn about audio electronics, no matter if anyone is beginner or not.