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Old 5th February 2011, 10:17 PM   #1
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Smile HELP PLEASE!!!!!

OK since nobody want to tell me how to build a portable amp for some small speakers and power from battery is there a link that you guy could provide that would help me it will need to be a step by step since I'm new on this. Oh and i don't want to buy a kit i want to do it from scratch.
Well thank you.
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Old 5th February 2011, 11:18 PM   #2
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Here's natsemi's range of chip amplifiers:-http://www.national.com/cat/index.cgi?i=i//286

They range in power from 20 to ~60 Watts, mono and stereo. Pick one and download a datasheet.

You can find out about building power supplies and many other audio topics at Rod Elliott's website:- Elliott Sound Products - The Audio Pages (Main Index)

w
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Old 6th February 2011, 12:21 AM   #3
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Quote:
Originally Posted by wakibaki View Post
Here's natsemi's range of chip amplifiers:-http://www.national.com/cat/index.cgi?i=i//286

They range in power from 20 to ~60 Watts, mono and stereo. Pick one and download a datasheet.

You can find out about building power supplies and many other audio topics at Rod Elliott's website:- Elliott Sound Products - The Audio Pages (Main Index)

w
Hi thank you for the comment the only problem i have is that i could only read a little bit the schematic and i don't know how to transfer it to a circuit board. I'm just a beginner so i would need pictures of the actual board and where they putting it that way i could go base on it.
Thank you.
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Old 6th February 2011, 04:20 AM   #4
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What about this, its really simple and can run on a 9v battery 10W Mini Audio Amplifier

When you say small speakers, how small?
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Old 6th February 2011, 06:49 AM   #5
norazmi is offline norazmi  Malaysia
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hi hobby guy,

we meet again, i`ll try post something with picture for you, you can consider build simple amp like lm3886, tda2003, and else, do you want to build on bread board or you know how to etch cooper board?

regards,
azmi
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Old 6th February 2011, 07:17 AM   #6
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Originally Posted by mattjuk81 View Post
What about this, its really simple and can run on a 9v battery 10W Mini Audio Amplifier

When you say small speakers, how small?
yes thank you that is better than just the schematic diagram and the speaker would be a small speaker from a surround sound system that don't have anything on the back and the other one has 4 and the omega sign and has 4W but this are small, then i have a little bigger from Sony and has printed (RATED IMPEDANCE : 6 and the omega sign) this would be my biggest one i have. And my only question would be can i buy the board or do i have to do it my self.
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Old 6th February 2011, 07:21 AM   #7
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Quote:
Originally Posted by norazmi View Post
hi hobby guy,

we meet again, i`ll try post something with picture for you, you can consider build simple amp like lm3886, tda2003, and else, do you want to build on bread board or you know how to etch cooper board?

regards,
azmi
Hey HI how are you, well thank you for helping me to do this project.
well i would like to solder it on a radio shack board since i don't have the money or the tools to make my self a board. I don't want it on a bread board cause i don't have one and i would like to keep this and take it were ever i go.
Well thank you so much norazmi i appreciate it.
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Old 6th February 2011, 08:03 PM   #8
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What battery do you plan on using...the type and voltage, current etc... ?
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Old 6th February 2011, 08:16 PM   #9
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Originally Posted by mattjuk81 View Post
What battery do you plan on using...the type and voltage, current etc... ?
Well a 9V battery.
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Old 9th February 2011, 10:27 PM   #10
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don't know how much power you want to get.
Maybe a trusty LM386 amp would fit?
It runs from 9V battery and it's very easy!
How long should it run on batteries?

Here you are: http://store.qkits.com/moreinfo.cfm/QK17
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