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We make a simple sound amplifier with our own hands. We will need the following:
1) Coil: L1 5 μH
2) Resistors: R1, R3 2.2 kOhm; R2, R5 22k; R4 680 Ohm; R6 2.2 ohms; R7 10 ohms.
3) Capacitors: C1, C4- 4.7 uF-25V; C3-22 uF-25V; C3-22 uF-25V; C5-0.47 uF-25V; C6, C7-1000 uF-35V.
4) Integrated circuit: DA1 TDA2050
Also, for soldering, you must purchase: a ceramic soldering iron, solder, fiberglass, ferric chloride, flux (rosin), a speaker (to check the amplifier’s performance), 10 V power (“crown”), wires, a connector, a radiator (for the first time, the chip will not heat up strongly, but still recommended to put cooling), glossy photo paper.
Now the fun part is getting ready for work. Here is a diagram of our device:

Simple sound booster


Now we need to make the wiring, which is easiest to do in the sprint layout program. After the wiring is ready, we print our wiring on photo paper (the printer must be laser!). Then we put the printed fragment on our board and for 5-10 minutes we iron the iron. Then we lower it under water and with light movements we clean the paper. Now we need to pickle the board. To do this, take ferric chloride and add it to slightly heated water and dip the board there (in no case do not use dishes designed for eating!) The etching process takes from 10 minutes to 5-8 hours, it all depends on the amount of solution and temperature water. After the board is etched, we clean off the paint layer, as a result of which our paths will become copper. Now we have to solder the elements. First, drill holes for our elements, after which it is recommended to lubricate the tracks with flux. After that, according to the scheme, we insert all the elements and solder them. On this, our work goes into the final stage, a test for operability.

Simple sound booster

Simple sound booster

Simple sound booster


By connecting the power, speaker and connecting the jack to a device with a 3.5 mm jack, you will hear your favorite music. For convenience, you can come up with a case for your device, an example of a case you can see below.

Simple sound booster

Simple sound booster

Simple sound booster
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Comments (10)
  1. Veent
    #1 Veent Guests July 18, 2012 19:36
    0
    You really can’t imagine any easier ... On tda 1562, try it. The 2050 still has a Soviet counterpart included one in one as well. There are some in old TVs.
  2. AKA
    #2 AKA Guests July 20, 2012 10:54 PM
    0
    Veent in tv un14 put, this is an analogue of 2003
  3. wefl
    #3 wefl Guests December 15, 2012 00:00
    0
    it's a little strange "C3-22 uF-25V; C3-22 uF-25V;"
  4. wefl
    #4 wefl Guests December 15, 2012 00:04
    0
    and C2 by how much
  5. Michael
    #5 Michael Guests March 19, 2013 19:46
    0
    Can I have more photos? On all sides is desirable?
  6. Daden
    #6 Daden Guests July 20, 2013 15:30
    0
    How to make L1 coil?
  7. Azote
    #7 Azote Guests April 11, 2015 19:54
    0
    Wiring diagram where?
  8. Yykh
    #8 Yykh Guests June 18, 2018 11:19
    0
    A bipolar supply circuit is provided, and the author suggests checking the performance of the crown. Which crown of 2050 requires from 18 to 25 volts per shoulder and, accordingly, 36-50 volts in the unipolar version. Power trans watt 60.Smoothing Conders for nutrition is better to put 20,000 microfarads in the shoulder, and not 1000 as suggested by the author. The throttle is never needed at all. Where did you get such a scheme? Datashit look laziness?
  9. putnik
    #9 putnik Guests August 20, 2018 09:22
    0
    this is ferric chloride !!! There are other compounds that are less aggressive, even based on hydrogen peroxide.
  10. Colorado
    #10 Colorado Guests December 1, 2018 5:46 p.m.
    0
    and not a word about the parameters

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