Author Topic: Basic audio amplifier?  (Read 1480 times)

Offline PspKicks316

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Basic audio amplifier?
« on: September 19, 2008, 02:55:50 PM »
I want to use an LM386 to make some speakers louder. I also want volume control on it.
I DID google search, but I got a bunch of different answers.

Can someone give me a schematic and parts list of how to make a small amp with that lm386?
It's going to power an iHome H4 speaker, 2 other speakers (unknown types,etc..) and a headphoine speaker. Lol.
Preferably as small of a voltage as needed, cuz space is cramped.

Thanks to whoever helps

Offline GhoSt

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Re: Basic audio amplifier?
« Reply #1 on: September 19, 2008, 03:10:06 PM »
try checking this data sheet on this page (http://newzealand.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=5342898 just scroll down to the data pdf) it has several typical amplifier aplications, You may need to modifiy them abit to get a volume but I suspect you could probably just use a potentiometer (varible resistor).
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Offline PspKicks316

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Re: Basic audio amplifier?
« Reply #2 on: September 19, 2008, 03:35:43 PM »
Or if someone could post how to make an amp using a quad op amp chip...I've got one of those too.
And, that doesn't really help, I don't have time to just test and try things out. I want a defnite schematic I can use. Thanks though

Offline PspKicks316

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Re: Basic audio amplifier?
« Reply #3 on: September 21, 2008, 03:12:50 PM »
So all I need is a 10k ohm resistor, 10ohm resistor, 0.05uF cap, and a 250uF cap, and follow that diagram?

How would I add a pot for volume controll on there? And will that work @ 9V?

 

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