Instructables

HOW TO BUILD A SIMPLEST AUDIO AMPLIFIER IWTH NO IC'S?

HI! AS I AM A KID I WANT TO BUILD AN AUDIO AMPLIFIER WITH NO IC'S ONLY CAPACITOR DIODES AND RESISTOR I HAVE SOME TRANSISTORS ALSO  CAN I BUILD AN AUDIO AMPLIFICATION CIRCUIT WITH NO IC'S??
AS I AM ONLY 15 I DON'T HAVE  MUCH MONEY TO BUY THESE IC'S CAUSE MY FATHER IS NOT SUPPORTING MY INTEREST IN ELECYRONICS!

REGARD'S
SAMAD HAQUE

rickharris2 years ago
A simple google search for transistor amplifier will give you a lot of results - Sites where the operation of the circuit is explained will be most use to you

http://www.eleccircuit.com/ideas-circuit-of-small-transistor-amplifiers/

google search

In actual fact if you stick to smaller amplifiers such as the LM386 are about the same price as you pay for the equivalent transistor.

Time perhaps to start to think of earning money to support your interests.

PS writing in all caps look like shouting.
+1. That first link looks like it has some good circuits. I think this is the best answer to this question so far.
iceng2 years ago
I'm laying out a PCB for a client starting this week. 
This board  has NO ICs,  NO Transistors and it is a 50W audio amp.

I'm over four times your age ........... What do you think ?

A
No ICs. No transistors. What else is there that could be used as a gain element? Vacuum tubes?
Magnetic amplifier

Mechanical amplifier (unlikely I know)

Yeah.  I guess there are a lot of ways to get gain.
http://en.wikipedia.org/wiki/Amplifier#Other_amplifier_types
But few of them are as cheap or ubiquitous as ICs and transistors.
samaddon (author)  Jack A Lopez2 years ago
That's very funny ( Sound's to me! )
i got a bundle of transistor from a self completely destroyed papa's tv set top box but thery are MP 2222A an some other names!
This link,
http://www.alltransistors.com/
is helpful for looking up unknown transistors.

I can't guarantee it will find every part number you give it, but it found MP2222A.

Somewhere around here there is probably an instructable on how to test bipolar junction transistors (BJTs), to figure out if they are NPN, PNP, and if they are working. Maybe here:
http://www.instructables.com/pages/search/search.jsp?q=transistor+test
samaddon (author)  Jack A Lopez2 years ago
thank's
for your kind help this gives me some more knowlde as i am a begginer
samaddon (author)  Jack A Lopez2 years ago
WELL I USE SAMPLES FROM COMPANIES TO BUILD ANYTHING CAUSE I AM A KID! AND I HAVE AN LM 358 IC.
iceng samaddon2 years ago
Here is a simple triode amplifier.
TriodeAmp.gif
Exactly, there is a resurgence into better sound ( as $ome people think )..

Now that Russia is manufacturing and delivers matched tranacoductance
Pentode pair sets for under half a "C" note.

Steampunk is now within my grasp ;-) 

A
Re-design2 years ago
If all you can get for amplification are transistors then you have to find an amp schematic that you can get the parts for.