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Class D Switching Power Amplifiers and Power D/A conversion

Simplest preamp for class D - special application
Simplest preamp for class D - special application
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Old 15th October 2015, 06:28 PM   #1
mmmalmberg is offline mmmalmberg  United States
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Default Simplest preamp for class D - special application

I have a couple of Sure TA-2024 15W class D amplifier boards for a sound art project and need the simplest minimum parts preamp to drive these from Arduino microprocessor output pins.

For testing I've been using a resistor divider to bring down the 5V output and feeding it to a tube guitar amp (which sounds great), but the Arduino doesn't drive the TA almost at all. Can I preamplify the Arduino output with a single transistor? I have 5V and 12.5V available to work with. Any ideas appreciated.
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Old 15th October 2015, 06:59 PM   #2
mmmalmberg is offline mmmalmberg  United States
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http://sure-electronics.net/Sure%20E...t%20Manual.pdf

Page 18, re. the Sure amp.
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