Privacy policy and cookies - INCBTech uses cookies and similar technologies to help deliver the best experience on our site. Our cookies are necessary for the operation of the website, monitoring site performance and to deliver relevant content. You can visit our Privacy Centre to learn more about your online settings.


1 W x 6 V Integrated Amplifier (ART510E)

This amplifier uses an integrated circuit and is suitable as a booster for battery powered walkman, small stereo, record player and cassette player.

The performance is excellent as you get 1 W with only 6 V and the number of external components is minimal: only two Capacitors and a volume control.

The main features of this amplifier are:


Supply voltage: 6 V

Output power at 8 ohm: 1 W

Voltage gain: 40 dB

Typical quiescent current: 4 mA

Frequency range: 20 to 20 000 Hz

Typical harmonic distortion: 0.2%

Input Impedance: 100k ohm



There is not much to talk about this circuit given its simplicity. The TDA7052 integrated circuit has a preamplified stage inside which drives two counter-phase power stages with excellent performance, even with only 6 V power.

The only external components are the two source decoupling Capacitors, which should be as close as possible to the integrated circuit power pin 1. The potentiometer P1 acts as a voltage divider, determining the signal intensity applied to the input and thus the volume.



The schematic diagram of this amplifier is shown in Figure 1.



Figure 1
Figure 1



The small printed circuit board with only 3 components is shown in Figure 2.



Figure 2
Figure 2



The electrolytic capacitor is for 6 V working voltage and the other (C1) can be ceramic or polyester. It will be interesting to build the integrated in a socket in order to avoid heat in the welding process and to facilitate replacement if necessary.

The external speaker can be any size but must be capable of supporting 1 W of power.



Power the circuit with 4 small, medium or large batteries and apply a signal to its input. Adjust the volume control (Pl) for a better playback.

Proving that the operation is normal, just use your amplifier.

If the signal source is a battery or walkman AM / FM radio, it is convenient to connect in parallel a 22 to 47 ohm x1/2 W resistor to the input to work as a load and thus avoid distortion. The volume of the signal source must be between the minimum and 1/4, just enough to drive it complete without distortion.


CI-1 -TDA7052- Integrated Circuit



C1 - 100 nF - Ceramic or Polyester

C2 - 220 uF - Electrolytic

P1 - 10 k - log potentiometer

FTE - 8 ohms x 1 W or more - speaker

Printed circuit board, battery holder, speaker, shielded wires, volume control swich, input jack, etc.