Simple low power amplifier

morgoth2006 · 3rd April 2011, 02:10 PM

Hey there.
The other day a friend from a computer store offered me some malfunctioning computer speakers. While checking them to see wich ones could be saved I found one made from only 3 transistors and a few other components. I will try to post a picture later. The design is quite funny because they faked a stereo design by using a dual ganged pot for the volume and then mixing the two channels together

.
But the design interested me because of the simplicity and the low part count. I've been looking for a design like this one to teach some electronics to my nephews but what other designs do you guys know? I want something made with discrete components, not chips, so that I can show them in the oscilloscope how each stage and each component behaves.
Thank you

simon7000 · 3rd April 2011, 04:02 PM

http://www.audioxpress.com/magsdirx/...tipton2730.pdf

Shows a modified version of a decent sounding simple amplifier. The original was built on a single aluminum plate.

3rd April 2011, 02:10 PM	#1
morgoth2006 diyAudio Member Join Date: Jul 2010	Simple low power amplifier Hey there. The other day a friend from a computer store offered me some malfunctioning computer speakers. While checking them to see wich ones could be saved I found one made from only 3 transistors and a few other components. I will try to post a picture later. The design is quite funny because they faked a stereo design by using a dual ganged pot for the volume and then mixing the two channels together . But the design interested me because of the simplicity and the low part count. I've been looking for a design like this one to teach some electronics to my nephews but what other designs do you guys know? I want something made with discrete components, not chips, so that I can show them in the oscilloscope how each stage and each component behaves. Thank you

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3rd April 2011, 04:02 PM	#2
simon7000 diyAudio Member Join Date: Nov 2008 Location: Oakmont PA	http://www.audioxpress.com/magsdirx/...tipton2730.pdf Shows a modified version of a decent sounding simple amplifier. The original was built on a single aluminum plate.

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