A very simple powerful amplifier on a chip

I'd say it's just a super simple amp that contains all four elements and puts out 40 watts of power into two channels!
4 parts and 40 W x 2 power output Karl! This is a godsend for car enthusiasts, since the amplifier is powered by 12 Volts, the full range is from 8 to 18 Volts. It can be easily integrated into subwoofers or speaker systems.
Everything is accessible today thanks to the use of modern element base. Namely the chip - TDA8560Q.

By the way, you can buy it for mere pennies here - TDA8560Q

This is a PHILIPS chip. Previously, the TDA1557Q was in use, on which you can also build a stereo amplifier with an output power of 22 W. But it was later modernized by updating the output stage and the TDA8560Q appeared with an output power of 40 W per channel. Also similar is the TDA8563Q.

Car amplifier circuit on a chip


A very simple powerful amplifier on a chip

The diagram shows a microcircuit, two input capacitors and one filter capacitor.The filter capacitor is specified with a minimum capacity of 2200 uF, but the best solution would be to take 4 of these capacitors and parallel them, this will ensure more stable operation of the amplifier at low frequencies. The microcircuit must be installed on a radiator, the larger the better.

Building a simple amplifier


A very simple powerful amplifier on a chip

A very simple powerful amplifier on a chip

It is also possible to increase the number of components in the circuit that increase reliability during operation, but not fundamentally.
A very simple powerful amplifier on a chip

Five more details have been added here, I’ll explain why. Two 10K Ohm resistors will remove the hum if there are long wires going to the circuit. A 27 K Ohm resistor and a 47 uF capacitor provide a smooth start of the amplifier without clicks. A 220 pF capacitor will filter out high-frequency noise traveling along the power wires. So I recommend modifying the circuit with these nodes; it won’t be superfluous.
I would also like to add that the amplifier develops full power only at a 2 Ohm load. At 4 Ohms there will be somewhere around 25 W, which is also very good. So our Soviet acoustics will be rocked.
Low-voltage, single-polar power supply provides additional advantages: it can be used in car speakers, but at home it can be powered from an old computer power supply.
The minimum number of components allows you to build in an amplifier to replace an old one that has failed on a microcircuit of other brands.

Watch the amplifier test video



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Comments (15)
  1. Alexey Golovin
    #1 Alexey Golovin Guests 26 November 2017 19:51
    2
    Good afternoon It's not clear where the entrance is
    1. Oleg
      #2 Oleg Guests November 27, 2017 05:02
      4
      There are only two terminals on the left and they are free. ) This is what they are. left and right channels.
  2. Guest Andrey
    #3 Guest Andrey Guests 26 November 2017 20:50
    0
    Input 1 and 13 pins
  3. Danil
    #4 Danil Guests November 26, 2017 21:50
    1
    Alexey, feed the inputs to 470uF capacitors,
  4. Alexey Golovin
    #5 Alexey Golovin Guests 28 November 2017 20:07
    2
    Thanks to everyone who responded!
  5. Guest Yuri
    #6 Guest Yuri Guests 30 November 2017 21:57
    4
    It couldn't be simpler. Manufacturing is accessible to anyone unfamiliar with electronics, as long as they know how to use a soldering iron.
    1. Guest Pavel
      #7 Guest Pavel Guests January 13, 2019 08:56
      2
      Believe me, it can be simpler. TDA7377 - this is really simple. And the power and sound quality are similar to the circuit described in this article.
  6. Guest Sergey
    #8 Guest Sergey Guests 3 December 2017 15:27
    1
    Something on the bottom doesn’t work.
  7. Guest Sergey
    #9 Guest Sergey Guests 31 March 2018 15:34
    2
    Everything is great!!!
    Tell me, what signal should be applied to the input in order to obtain the declared output power?
  8. Guest Evgeniy
    #10 Guest Evgeniy Guests 4 June 2018 18:18
    3
    Good time! I'm very interested in the scheme, but I don't have enough skills. How to adjust the volume in this particular circuit? I want to build it for a computer; adjusting the sound with the mouse every time is not very convenient...
    1. Guest Voldemar
      #11 Guest Voldemar Guests 7 December 2018 18:56
      1
      How can you provide power without such defining concepts as nonlinear and other distortion coefficients? Radio or just amateurs?
    2. Guest Pavel
      #12 Guest Pavel Guests January 13, 2019 09:00
      0
      Any paired potentiometer (variable resistor) 50-100 kOhm.
      We connect the lower legs - common (ground).
      On the upper legs - a signal from the sound source.
      From the middle legs - to the microcircuit.
  9. Guest Andrey
    #13 Guest Andrey Guests January 22, 2020 11:49
    4
    Good afternoon
    Tell me, who knows, please:
    can this circuit be used to create a common base amplifier?
    Those. I need pins 6 and 7 to go to the body (-).
    Thank you.
  10. Guest Andrey
    #14 Guest Andrey Guests January 22, 2020 11:52
    5
    Alternatively: just like with the inputs, connect pins 6 and 7 through 10K resistors to the case?