10w Class B audio amplifier (using transistors)

my blog
http://kidscircuit.wordpress.com/2010/11/15/my-first-transistors-amplifier10w...

------Design specifications------
Voltage gain = 20dB
Output Power = 10W(8ohm load)
Frequency = DC ~ 150 kHz(-3dB bandwidth)
Total Harmonics Distortion = less than 0.1%
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i built it using some transistors, i'm learning how to use transistors these days, and i found that transistors are very interesting!! It can be a amplifier, i'm going to make more and more amplifier, and i want to bulid vedio selector, vedio amplifier, transistor radio and another K-Fi!! many many things you can do with you transistors that great! i like transistor!!

Category:

Science & Technology

Tags:

• transistors
• Electronics
• power
• amplifier
• Class
• signal
• NE5532
• NPN
• PNP
• OPAmp
• 8ohm
• speaker

[MrBertech]

is that a 3 stage class b amp?



[nsmvgpdf]

@MrBertech YES,it is.

[strangerlover11]

Excellent job but can you do for me to give me a nice one amplifier schematic for disktop

speakers about 3 to 5 watts thanks.............

[nsmvgpdf]

@strangerlover11 I'm afraid I can not give you the schematic, in fact, I'm just a beginner, this aspect of the design is not very understanding, but also quite busy recently, sorry!

[nsmvgpdf]

Thanks for you comment, actually i'm a amp begineer, i just learn how to use transistors to bulid a amp, and i'm not clearly know all about that.

i'll try to remove that chip, thank you :)

[3006aiv]

молодец япошка!!!!!!!!!

[BadRabbit1776]

Nice Amp...

[strangerlover11]

@nsmvgpdf Its oke but actually I like 2 to 3 watts amplifier for my disktop computer I can buy the speaker outside but this is just my hobby actually I boughted 2 watts amplifier but unfortunately I have 4ohm speaker

which sound become so noisy thats why I asked you thanks for your reply........

[destroyersoueu]

Good, very good...but you know that removing that chip you can have 0.002% THD...and this sounds much better....try to remove, for a while, that chip and install discrete differential amplifiers...i guarantee you will prefer the sound this other way...this way i am lisyening distortions from the choip...you can do it much better