Electronics lesson: electronic parts, electronic components, electronic projects, circuit diagram and more
This amplifier circuit will be nice for your car audio system. The circuit is simple, easy to build and not required large box or space.
The TDA1553CQ is a monolithic integrated class-B output amplifier in a 13-lead plastic DIL-bent-SIL power package. It contains 2×22 W amplifiers in BTL configuration. The device is primarily developed for car radio applications.
This is another simple schematic diagram of 25W power audio amplifier using single IC LM1875.
Component part list
R1 _____________ 1K R2 _____________ 1M R3 _____________ 22K R4 _____________ 10K R5 _____________ 180K R6 _____________ 1R IC1 ____________ LM1875 |
C1 _____________ 1uF 50V C2,6 ___________ 100nF C3 _____________ 22uF 63V C4 _____________ 0.22uF C7,5 ___________ 220uF 50V Miscellaneous: Fuse holder & cover 2 amp fuses |
This is a simple audio mixer circuit diagram:
You can add some resistors in parallel connection for more audio input. To adjust the volume for each input channel, add linear trimmer or potentiometer with configuration: pin1> ground; pin2>output; pin 3>input.
This is the circuit diagram of 10 watt stereo audio amplifier built based on single TDA2009A as the main component. This circuit will be very easy and cheap to build, nice project for junior high school students.
Component list:
R1, R3_________ 1K2 ohm R2, R4_________ 18 ohm R5, R6_________ 1 ohm C1, C2_________ 3u3 50V mini C3_____________ 22uF 16V C5_____________ 100uF 35V C6, C7_________ 220uF 10V C10, C11_______ 2200uF 35V C4, C8, C9_____ 100nF IC_____________ TDA2009A Heat sink
You can download the 10 Watt Amplifier with TDA2009A in PDF version schematic diagram from HERE
This simple amplifier circuit will be nice for newbie project/junior student. Require an IC LM386N to build a mono channel amplifier. There are few components such as capacitor, resistor, potensiometer and speaker in this circuit, so the students will know the real shape of components.
Parts List :
Capacitors : C1, C5 2.2 uF / 50Vecap _________2 C2, C9 10 uF / 25V ecap _________2 C3, C7 100 nF mono (104) ________2 C4 100 uF / 16V ecap ____________1 C6, C8 470 uF / 16V ecap ________2 C10, C11 47 nF mylar (473) ______2 Resistors : R1, R2 10 ohm ___________________2 Pot 1 10k ohm stereo pot ________1 Misc. : IC 1, 2 LM386N __________________2 8 pin IC socket _________________2
