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I used the Texas Instruments TPS1517 stereo audio amplifier chip to build an amplifier to drive my speakers.
I found a pair of small 8 ohm, 0.5 watt speakers matching the color of my monitor and attached them with hot glue to its sides. They did not have amplifiers inside, and connecting them directly to the sound card resulted in very low volume indeed.
The TPS1517 was common in soundcards long ago, being used for a choice of headphone or line outputs. The chip is simple to use, it just needs a 12 volt supply, and capacitors on the input and output.
I opted to use an SMD device, and to build it "dead bug" style. The chip was glued upside down on a plain copper clad board, and the rest of the components placed around it. This type of construction is known as the "dead bug" style of construction, since the integrated circuits in it resemble dead insects with their legs up in the air.
I found a pair of small 8 ohm, 0.5 watt speakers matching the color of my monitor and attached them with hot glue to its sides. They did not have amplifiers inside, and connecting them directly to the sound card resulted in very low volume indeed.
The TPS1517 was common in soundcards long ago, being used for a choice of headphone or line outputs. The chip is simple to use, it just needs a 12 volt supply, and capacitors on the input and output.
I opted to use an SMD device, and to build it "dead bug" style. The chip was glued upside down on a plain copper clad board, and the rest of the components placed around it. This type of construction is known as the "dead bug" style of construction, since the integrated circuits in it resemble dead insects with their legs up in the air.
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Signing UpStep 1The circuit
The circuit is taken from the data sheet for the TPA1517, simplified by leaving out the mute and standby switching.
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I have a Class A 8W Kit Amp that uses 9V - 12V .
But that's where it is , a FET amp .