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GB for Simple Cap-Mx Regulated Low-Noise PSU
GB for Simple Cap-Mx Regulated Low-Noise PSU
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Old 28th May 2019, 12:51 PM   #81
xrk971 is offline xrk971  United States
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GB for Simple Cap-Mx Regulated Low-Noise PSU
No, it was just convenient to place underneath. You can bend legs on an axial and lay it sideways and solder it there as well. Thanks
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Old 28th May 2019, 01:47 PM   #82
jimk04 is offline jimk04  United Kingdom
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Great thanks.
And sorry I forgot to ask.....is it ok to pre reg with lm317 before the SimpleMx to alleviate some heat from it ...so the voltage drop isn't so large on the SmX..?

I have some 317 boards...some toroids and rectifiers I would like to use up, but it will get me a higher voltage than comfortable to feed into the Smx to reg down to 5v for Rpi

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Old 28th May 2019, 02:39 PM   #83
pcgab is offline pcgab  United States
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GB for Simple Cap-Mx Regulated Low-Noise PSU
How did I miss this?! These look perfect for my pi/dac set up.

If you some boards on hand, I would like to get a few from you. I can pm if need be, not sure if there is a current gb in progress or not.

Thanks!
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Old 29th May 2019, 01:01 AM   #84
xrk971 is offline xrk971  United States
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GB for Simple Cap-Mx Regulated Low-Noise PSU
Hi Pchab,
Sure, no problem. Will send invoice.
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Old 11th June 2019, 05:38 PM   #85
Centurion53 is offline Centurion53  United States
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Default C113

Need to ask a stupid question, I am not used to seeing capacitor values listed the way its shown on the BOM for C113, 2u2, what is this value?
Thanks,
Bill
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Old 11th June 2019, 05:43 PM   #86
pcgab is offline pcgab  United States
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GB for Simple Cap-Mx Regulated Low-Noise PSU
Quote:
Originally Posted by Centurion53 View Post
Need to ask a stupid question, I am not used to seeing capacitor values listed the way its shown on the BOM for C113, 2u2, what is this value?
Thanks,
Bill
Similar to how some resistors are listed '2u2' would translate to 2.2uF.
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Old 11th June 2019, 06:26 PM   #87
xrk971 is offline xrk971  United States
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Yes, the R (k or M), or u (Greek mu) or n (nano) or p (pico) is placed at the decimal.

For example 2R2 is 2.2 ohms, 2k2 is 2200 ohms, 2M2 is 2,200,000 ohms

2.2uF is 2.2 micro Farads, 2u2 is same, but with caps, M is sometimes used for Micro rather than Mega, so 2.2M is 2.2 micro Farads. And 2n2 is 2.2 nano Farads or 0.000022 Farads, and 36p is 36 pico Farads, etc.
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Old 11th June 2019, 07:47 PM   #88
Centurion53 is offline Centurion53  United States
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Default C113

Thanks, that was my guess but wanted to make sure.
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Old 13th June 2019, 08:00 PM   #89
pcgab is offline pcgab  United States
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GB for Simple Cap-Mx Regulated Low-Noise PSU
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Originally Posted by xrk971 View Post
The 3A 5v regulator is a separate project - but let me see how we can make one. 3A at 5v is 15w upstream.
Is there a thread on this one yet?

Thanks!
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Old 21st June 2019, 12:16 AM   #90
pcgab is offline pcgab  United States
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GB for Simple Cap-Mx Regulated Low-Noise PSU
I got my two boards mostly assembled, waiting on some tpsa regs to arrive. So while I'm waiting for them to get here, I'm trying to figure out layout in my prototype chassis.

I'm using a 2x 9v/2x 15v toroidal transformer to feed into Salas' 'DC Flexy' boards that will feed into the cap-mx regulated supplies.

1 will feed the TDA1387 DAC Hat from Matt Garman.
1 will feed the Allo Kali re-clocker.

There is also a tpsa* regulated supply in there to feed the pi directly.

Hopefully the ebay tpsa regs get here soon, so I can wrap up and start listening!

The cap-mx supply boards are super easy to assemble, nicely laid out and a decent size. I used parts from my stash mostly, so some of the components choices may be a bit odd.
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Last edited by pcgab; 21st June 2019 at 12:18 AM. Reason: add pictures
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