lm1875 (or tda2030a) single-channel & single-supply audio ... ... single-channel &...
TRANSCRIPT
iENK WWW.iENK.COM
LM1875 (or TDA2030A) Single-channel & single-supply audio amplifier kit guide
Features Description: Wide voltage operation; supporting the DC voltage or AC voltage power supply. mini compact, easy to install and diy.
Applications: Computer audio, car audio, mobile audio devices; support CD/DVD/MP3/MP4 / computers, access to music.
First, please check the packaging of all electronic components, items and quantity is correct: Kit Description: 1、Hand soldering before you visit the website for more detailed information on the production. 2、Please refer to the left of the item sequence, soldering all the components. 3、soldering ago, you need to be carefully, carefully, check and confirm the polarity of electrolytic capacitors, and diodes. Check it no error, you can be connected to the power. 4、Check the power cable and audio output connector location. To confirm the correct method, it can be connected to the power of work. 5、Under normal circumstances, the audio chip to install fans hot aluminum. (But input supply voltage less than
12V, we do not recommend installing good thermal aluminum, the actual test is safe) 6、AC or DC power supplies, you can choose one of them. Must not be at the same time the input DC voltage and AC voltage. 7、AC voltage input range: 10V ~ 20V; DC voltage input range: 10V ~ 20V; audio output for the 8 ohm or 4 ohm load. 8、Output audio up to 20W, but the output power and input signal and supply voltage relationship, please note. 9、Special Note: The default audio input terminal for the open-circuit floating state, so will not receive the signal source will have some electrical noise. When the normal access to the audio signal (or 1K resistor in parallel) will not have any noise. 10、Please visit the website http://www.ienk.com, making reference to read more information.
11、We recommend that, when you encounter any problems, please take the initiative to consult us, or your classmates, teachers, friends, User, etc. to help you solve the problem.
Part Type Qty Designator
Out cable 2 Power IN & Audio OUT
In cable 1 AUDIO IN
22KΩ 3 R4 R3 R2
200KΩ 1 R5
10KΩ 1 R6
1Ω 1 R7
104 1 C4
0.22uF/63V 1 C3
2.2uF/16V 2 C2 C1
3300/35V 2 C6 C5
2200uF/25V 1 C7
1N4001 6 D6.D5.D4.D3.D2.D1
LM1875 1 IC1(or TDA2030A)
Audio in cable 1 Audio input cable
Blue board 1 double-sided PCB
12、The documentation is to help you have the key to the successful completion of this project. Subject to updates without notice. Please feel free to browse our website to check the latest instructions. The English version of the ultimate description may not be correct. Please take the initiative to read our in-kind reference images and content. Finally, thanks google.
