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Class D Switching Power Amplifiers and Power D/A conversion

TA2022 power supply
TA2022 power supply
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Old 22nd March 2005, 11:22 AM   #1
simingx is offline simingx  Singapore
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Join Date: Mar 2005
Location: 01°17.5319' N, 103°48.2319' E
Default TA2022 power supply

Hi all,
I need a +/- 30V supply for a TA2022 amp that i'm planning to build, but I can only get 0-18 0-18 and 0-25 0-25V transformers here.
The 18V units would give me +/- 25V (a tad low) and the 25V units +/- 35V (which is marginally high).

Which one should I go for? I will be rectifying and filtering the two outputs from the transfomers seperately, so theoratically I will drop approx. 1.4 volts from each output, which would give me 23.6V and 33.6 volts... but I'd prefer not to rely on that.

Any suggestions?
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Old 22nd March 2005, 12:36 PM   #2
mhelin is offline mhelin
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Join Date: Apr 2003
Location: Tampere Finland Europe
Use the 0-25 0-25V transformer is your speakers are close to 8 ohms, otherwise select the 0-18 0-18V transformer.
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