10W Audio Amplifier Circuit by TDA2030

The amplifier circuit by ic TDA2030 described here is an powerful audio amplifier with output power of 10W. TDA2030 is a monolithic IC, used as a low frequency class AB Amplifier. It has high output current and very low distortion. This 10W audio amplifier using TDA2030 is good for home/ small room.

Circuit Diagram of '10W amplifier circuit using IC TDA2030' with power supply.

Fig-1: Circuit Diagram of 10W audio amplifier

TDA2030 Pin Diagram:

Fig-2: TDA2030-Pinout/Pin-diagram

Circuit Description:

TX is a Center taped step down Transformer (230V,50Hz; 12-0-12,3A). For bridge rectifier use Diode 1N5408, 1N5407 etc. Use 10KΩ to 100KΩ as R3. VR 100K is a POT/Variable Resistor to control sound level. Capacitor C1,C2,C3,C4 is used as filter capacitor to reduce the ripple factor(AC element in DC). If ripple factor is high in supplied DC voltage of an amplifier, then output audio signal of that amplifier will be noisy. Remember that high ripple factor is responsible for high noise.
The main attraction of an audio amplifier is its high output power and very low noise. For this requirement, this 10W audio amplifier circuit using this IC-TDA2030 is very good within low cost.

Parts List

Parts	Value	Name
C1	2A104J	CAPACITOR
C2	2A104J	CAPACITOR
C3	2200µF,25v	CAPACITOR
C4	2200µF,25v	CAPACITOR
C7	2A104J	CAPACITOR
D1-D4	1N5408	DIODE
R1	33K	RESISTOR
SPK1	4-8 Ω	SPEAKER
Tx	230v / 12v-0-12v 3A center tap transformer	Transformer (Center Tap Secondary)
U1	TDA 2030	IC

Note:

• Use transformer with (12-0-12,3A) output voltage.
• Don’t use higher than 2200Hz,25V capacitor as C3,C4. That may damage the IC.
• Must use Heat Sink with the IC-TDA2030. Without proper Heat Sink the IC will be in risk of fry up
• Don’t use smaller than 1N54XX diode like 1N40XX, 1N40XX(ex:1N4001) may get damaged. We recommend to use four 1N5408 for bridge rectifier.
• All ground point in the circuit should be connected in a single point and ground it(If possible) or connect in transformers ''0'' marked wire as shown in the circuit.

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