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Class D Switching Power Amplifiers and Power D/A conversion

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Old 9th December 2012, 08:25 PM   #11
Budgie is offline Budgie  United States
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I would think 1 mfd would be enough. Bigger is okay, but not required. A decent quality film type will sound better then a electrolytic.

Last edited by Budgie; 9th December 2012 at 08:28 PM.
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Old 11th December 2012, 06:29 AM   #12
prezden is offline prezden  Canada
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I've just about finished my first project with this little amp and have one small problem. On start up it makes some clicking sounds through the speakers. When I turn it off them on again the clicking is gone.
Any idea why it would do this?

ps: I am planning on implementing to the cap changes on the second board; have to order the caps.
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Old 11th December 2012, 08:12 PM   #13
Budgie is offline Budgie  United States
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I don't have experience with that board. It may be normal for that chip when it first powers up. You could add a delayed relay to disconnect the speakers for a few seconds when the amp is powered up, but that's more work. I would only worry about it if it looks like its hard on the speakers when it happens. Do the speaker cones move excessively in or out when the click happens?
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Old 19th December 2012, 01:40 AM   #14
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Default Getting more power

Guy's i thought this amp could be bridged, at least that is what the Texas site idicates. Put it does not show how??
Can anyone advise
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Old 19th December 2012, 07:45 AM   #15
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You have to invert the signal to one channel. If you're not using a balanced source then you have to build a separate circuit for this or use a transformer. I suggest just using one of their other ICs if you want bridged outputs.
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