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-   -   Juma's Easy-Peasy Capacitance Multiplier (https://www.diyaudio.com/forums/power-supplies/297921-jumas-easy-peasy-capacitance-multiplier.html)

gtose 8th August 2018 06:04 AM

2 Attachment(s)
Prasi, your mastery of PCB layout has inspired v2 of my design. I have attempted to move "all the action" to the output ground connection.

The grounds of C3, C4, R3, R4 have been moved to their own ground plane. The grounds of C1, C2, R1 are run to the output in their own planes (top and bottom). The two only connect at the output faston and surrounding vias.

What do you think?

prasi 8th August 2018 06:51 AM

gtose,
That's looking fantastic now. Congratulations and all the best for your build and test. Do post once you complete the testing.
regards
Prasi

Mark Johnson 8th August 2018 02:57 PM

1 Attachment(s)
gtose, if you decided to rotate capacitor C4 by 90 degrees, clockwise, you could get much better continuity on the green plane. The green signal track between C4 and the potentiometer, would not interfere with the green plane as much.

Also you might consider adding the two white triangles shown below, onto the green layer.

gtose 9th August 2018 05:10 AM

2 Attachment(s)
Mark, great suggestion! I've implemented this in version 3 below. I've also reduced the keepout size around the m3 mounting holes to get more width on the input ground plane on the top layer.

Skylar88 9th August 2018 09:08 AM

Quote:

Originally Posted by gtose (https://www.diyaudio.com/forums/power-supplies/297921-jumas-easy-peasy-capacitance-multiplier-post5508260.html#post5508260)


DigiKey BOM: Index - My Digi-Key

I'm asked to log in to DigiKey, but I don't have an account. Could someone please post the BOM here?

Thanks :)

.

gtose 9th August 2018 01:28 PM

Skylar88, the CSV BOM is below.

Code:

"Manufacturer Part Number","Manufacturer","Digi-Key Part Number","Customer Reference","Quantity","Unit Price","Extended Price","Quantity Available","Description"
"BFC237321225","Vishay BC Components","BC1767-ND","C1","1","3.12000","$3.12","672","CAP FILM 2.2UF 10% 100VDC RADIAL"
"SLPX223M035H4P3","Cornell Dubilier Electronics (CDE)","338-1598-ND","C2","1","4.59000","$4.59","688","CAP ALUM 22000UF 20% 35V SNAP"
"BD13910S","ON Semiconductor","BD13910S-ND","Q1","1","0.49000","$0.49","1322","TRANS NPN 80V 1.5A TO-126"
"2SC5200RTU","ON Semiconductor","2SC5200RTU-ND","Q2","1","3.42000","$3.42","483","TRANS NPN 250V 17A TO264"
"EEU-FC1H471","Panasonic Electronic Components","P10328-ND","C3","1","1.04000","$1.04","17034","CAP ALUM 470UF 20% 50V RADIAL"
"ERG-2SJ302","Panasonic Electronic Components","P3.0KW-2BK-ND","R1","1","0.36000","$0.36","9599","RES 3K OHM 2W 5% AXIAL"
"MBB02070C1002FRP00","Vishay BC Components","BC10.0KZCT-ND","R3","1","0.30000","$0.30","48466","RES 10K OHM 0.6W 1% AXIAL"
"MBB02070C1500FCT00","Vishay BC Components","BC3614CT-ND","R2","1","0.30000","$0.30","89383","RES 150 OHM 0.6W 1% AXIAL"
"MBB02070C2001FCT00","Vishay BC Components","BC3653CT-ND","R4","1","0.30000","$0.30","18973","RES 2K OHM 0.6W 1% AXIAL"
"3362P-1-102LF","Bourns Inc.","3362P-102LF-ND","RV1","1","1.02000","$1.02","4415","TRIMMER 1K OHM 0.5W PC PIN TOP"
"63824-1","TE Connectivity AMP Connectors","A29938CT-ND","J1-4","4","0.13000","$0.52","33420","CONN QC TAB 0.250 SOLDER"
"EEU-FC1V102","Panasonic Electronic Components","P10305-ND","C4","1","1.04000","$1.04","19870","CAP ALUM 1000UF 20% 35V RADIAL"


Skylar88 9th August 2018 01:50 PM

Quote:

Originally Posted by gtose (https://www.diyaudio.com/forums/power-supplies/297921-jumas-easy-peasy-capacitance-multiplier-post5512162.html#post5512162)
Skylar88, the CSV BOM is below.


Thanks gtose. Works perfectly as a CSV. :cheerful:
.

ferret 13th August 2018 08:51 PM

@Prasi


Call me OCD, but I am rather going to be putting in at least 50V, but most likely 63V caps, instead of 35V ones. My Class A amps have 28V power rails. Also, I am thinking of extending the front end of the board, and putting in two 10kuF caps per rail. This would end up taking up an additional 40mm length wise, but cost me 30% less for the caps. The 22kuF are pricey here in SA. Your thoughts/comments on this please, Prashant.


Regards, Kevin

prasi 14th August 2018 03:19 AM

Quote:

Originally Posted by ferret (https://www.diyaudio.com/forums/power-supplies/297921-jumas-easy-peasy-capacitance-multiplier-post5515758.html#post5515758)
@Prasi


Call me OCD, but I am rather going to be putting in at least 50V, but most likely 63V caps, instead of 35V ones. My Class A amps have 28V power rails. Also, I am thinking of extending the front end of the board, and putting in two 10kuF caps per rail. This would end up taking up an additional 40mm length wise, but cost me 30% less for the caps. The 22kuF are pricey here in SA. Your thoughts/comments on this please, Prashant.


Regards, Kevin

Hello Kevin,
There is GB ongoing being done by a member meanman1964 with PMI/Mr. Evil Cap MX that uses 2 caps per rail. I think that would suit your requirements.
Check out the GB section.
regards
Prasi

prasi 14th August 2018 05:47 PM

Quote:

Originally Posted by ferret (https://www.diyaudio.com/forums/power-supplies/297921-jumas-easy-peasy-capacitance-multiplier-post5515758.html#post5515758)
@Prasi


Call me OCD, but I am rather going to be putting in at least 50V, but most likely 63V caps, instead of 35V ones. My Class A amps have 28V power rails. Also, I am thinking of extending the front end of the board, and putting in two 10kuF caps per rail. This would end up taking up an additional 40mm length wise, but cost me 30% less for the caps. The 22kuF are pricey here in SA. Your thoughts/comments on this please, Prashant.


Regards, Kevin

Hello kevin,
I have been thinking about your suggestion.....Yes adding another cap on the input side is good, but I think I asked this before, would adding an output cap be better? SOmething like a quality 4700uF perhaps?

regards
Prasi


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