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Tangent THREAD work with multiple outputs?

post #1 of 11
2/3/10 at 8:32pm
Thread Starter 
I'm fairly new to DIY so please forgive the dumb question.

I want to run two 5v devices, a amb gamma2 and a sony pcdp from one psu. Can I do this with one transformer and a regulator like a thread with the power output split into two connectors?
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post #2 of 11
2/3/10 at 9:40pm
Yes, but just make sure you don't do this with a devices that are connected together with one having a virtual ground.
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post #3 of 11
2/4/10 at 1:46am
Thread Starter 
My plan is to use either a 9V DC wallwart or 9 VAC @ 556mA torodial transformer (digikey TE62021-ND) --> Tangent THREAD set to output 5V DC --> split into two connectors 1 to fit the gamma2 and a the other Sony D-EJ01 CD player.

How do I know if something has a virtual ground?
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post #4 of 11
2/4/10 at 1:51am
im also doing something like this but im trying to get 5v+ & ground. Maybe the info there can help. http://www.head-fi.org/forums/f7/mod.../index142.html
scroll down to see wiring diagram attachment.
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post #5 of 11
2/5/10 at 12:30am
Thread Starter 
Thanks keyid but I noticed your using two different secondaries off your transformer. Is that a requirement?
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post #6 of 11
2/5/10 at 12:46am
use a dual secondary trafo and use 2 treads.

or 2 sigma25's (amb)

or 1 of each

don't share 1 psu. they are cheap. use 1 EACH.
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post #7 of 11
2/5/10 at 1:10am
Thread Starter 
Thank you linuxwork I'll stop pinching the pennies and let Abe take a breath.
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post #8 of 11
2/5/10 at 1:12am
when I look at a lot of dacs, they have LOTS of reg chips in them. lots and lots. its a way to do it, I guess.

so don't combine, go discrete. the 'insulation' is what you want.
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post #9 of 11
2/5/10 at 1:35am
What is the current draw of the D-EJ01 ?
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post #10 of 11
2/5/10 at 10:57am
Thread Starter 
I'm not sure how to measure current draw without taking it apart. The reccomended Sony wallwart rated at 4.5v 500mA although I'm using one that 5v and it seems to work fine.
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post #11 of 11
2/5/10 at 2:24pm
The Sony specs will work.
Figure 800mA as a conservative estimate for both devices.
Track down a suitable transformer and plug the numbers into Tangent's power supply estimator to see if you can come up with a workable solution with a single tread.
(the only reason I can see why would you would want multiple tread boards is if you can't locate a suitable heatsink)

Here is the link---->

Power Supply Parameter Estimator
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