bipolar power supply

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bipolar power supply

Postby Wiz » Sun Jul 14, 2013 1:42 pm

I am doing lots and lots of reading, waiting for some stuff to arrive so I can venture into the land of DIY preamps.

I am going to start by building (breadboarding) a preamp based around the INA217 op amp. Then the THAT 1510 and 1512 opamps.

Essentially I am going to build basic as possible, see what it sounds like, swap out cap types, see what it sounds like, add stuff, see what it sounds like.

Now my problem is, the bipolar +-15V DC supply I will need.


Does anyone have any recommendation, on getting from 240V AC to +- 15V DC , safely, with good quality and a reasonable price?


this is one I came up with

http://www.diyrecordingequipment.com/projects/dantimax-phpsu1b/


Oh, and do you think linear, or SMPS? (guessing linear)

cheers and thanks in advance
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Re: bipolar power supply

Postby chris p » Sun Jul 14, 2013 3:50 pm

Wiz

Will you be adding in +48V phantom power as well?

I would recommend Joe Malone's kits at jlmaudio.com - look under power supply kits for the AC/DC. You then power it from a wall wart which provides isolation and step down from the 240V mains.
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Re: bipolar power supply

Postby Wiz » Sun Jul 14, 2013 3:55 pm

at this point, no phantom....

I have been looking through Joes kits all morning and wrote to him last week...(hoping he gets back to me soon)

I cant work out, how to get +-15V with his kits...

more reading.
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Re: bipolar power supply

Postby Alistair » Sun Jul 14, 2013 4:38 pm

AC/DC or Powerstation.

http://www.jlmaudio.com/shop/index.php? ... oductId=11

Both can do bipolar. As well as +48v for phantom all at the same time.
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Re: bipolar power supply

Postby waitup » Sun Jul 14, 2013 6:58 pm

JLM is the best option for sure!
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Re: bipolar power supply

Postby Wiz » Fri Jul 19, 2013 7:24 pm

I built the ACDC from JLM

no probs, easy to go together, Joe was awesome as always..

thanks for the headsup
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Re: bipolar power supply

Postby Chris H » Mon Jul 22, 2013 1:10 pm

...........bipolar power supply........ Have you tried Lithium batteries? :D
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Re: bipolar power supply

Postby Manning » Mon Jul 22, 2013 1:54 pm

Chris H wrote:...........bipolar power supply........ Have you tried Lithium batteries?


Thank you, we're here all week, try the veal :)
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Re: bipolar power supply

Postby Chris H » Mon Jul 22, 2013 3:05 pm

Manning wrote:
Chris H wrote:...........bipolar power supply........ Have you tried Lithium batteries?


Thank you, we're here all week, try the veal


,,,..ok , I know.... dagy done to death dad joke. :-B
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