TA2022 power supply

simingx · 22nd March 2005, 11:22 AM

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?

mhelin · 22nd March 2005, 12:36 PM

Use the 0-25 0-25V transformer is your speakers are close to 8 ohms, otherwise select the 0-18 0-18V transformer.

22nd March 2005, 11:22 AM	#1
simingx diyAudio Member Join Date: Mar 2005 Location: 01°17.5319' N, 103°48.2319' E	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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22nd March 2005, 12:36 PM	#2
mhelin diyAudio Member 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.