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Old 3rd March 2019, 05:43 PM   #1
prasi is offline prasi  India
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Location: Near Western Ghats
GB: CRCRC PSU
Default GB: CRCRC PSU

Hello all,
This is an off shoot of the CRC PSU done by Project16 and GB carried forward by me. CRC Power Supply (Class A amplifier)
Some of the initial discussions can be read in that thread.
I have a made a new design of CRCRC PSU which is based the original Project16 design.

Few people have already subscribed as per below list.

Prasi- 4 nos.
Silasmellor - 4 nos.
Vunce- 4 nos.
Myint67- 2
Vasilis - 6
Hicoco - 2
Surfatwork - 2
manniraj - 4
Cl00sed(Rajesh) - 2
MD_Stryker - 4
xrk971 - 2
gary s - 4
Project16 - 2
bk856er - 2
Luke - 2
ymwong - 6
Pinnocchio - 2
883bkong-2
ipolyakov - 4

Total - 60

The price is yet to be ascertained from supplier, but it will be about 9usd per piece+ paypal and S&H.

The PCB specs are
150mm x 150mm, 2.4mm thick Fr-4 material, 70um copper thickness, Green mask, double sided, white silk, HASL.

Attached are the revevant images.

I plan to order PCBs by end of week, manufacturing lead time will be 18-22 days.

regards
Prasi

Edit:
The correct schematic is in post #30 thanks to ckwong99 for spotting it. It was a mistake on the information layer on the negative bridge rectifier (blue).
Attached Images
File Type: jpg 3d1.jpg (378.4 KB, 547 views)
File Type: jpg 3d2.jpg (261.2 KB, 535 views)
File Type: jpg 3d3.jpg (323.5 KB, 523 views)
File Type: jpg 3d4.jpg (285.2 KB, 518 views)
File Type: jpg CRCRC-PRASI.jpg (805.2 KB, 520 views)
File Type: png SCHEMATIC-CRCRC.png (74.5 KB, 285 views)
Attached Files
File Type: zip bulk PSU - r4_ListByValues.zip (10.7 KB, 36 views)
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Last edited by prasi; 8th March 2019 at 03:30 PM.
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Old 3rd March 2019, 06:41 PM   #2
outtek is online now outtek
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Hi Prasi, one board for me please.
Thanks.
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Old 3rd March 2019, 07:32 PM   #3
Stixx is offline Stixx  Germany
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Join Date: Sep 2003
Location: Southern Germany
Prasi- 4 nos.
Silasmellor - 4 nos.
Vunce- 4 nos.
Myint67- 2
Vasilis - 6
Hicoco - 2
Surfatwork - 2
manniraj - 4
Cl00sed(Rajesh) - 2
MD_Stryker - 4
xrk971 - 2
gary s - 4
Project16 - 2
bk856er - 2
Luke - 2
ymwong - 6
Pinnocchio - 2
883bkong-2
ipolyakov - 4
outtek - 1
Stixx - 2

Total - 63
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Old 3rd March 2019, 08:04 PM   #4
gary s is offline gary s  Australia
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Thanks Prasi for this new update.
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Old 3rd March 2019, 10:11 PM   #5
marcus1 is offline marcus1
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Hello Prasi
How much of an improvement do you think your new design is over the version 1 board you sold last year?
Thanks
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Old 4th March 2019, 12:44 AM   #6
prasi is offline prasi  India
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GB: CRCRC PSU
Quote:
Originally Posted by marcus1 View Post
Hello Prasi
How much of an improvement do you think your new design is over the version 1 board you sold last year?
Thanks
here is a sim work done by member silas mellor CRC Power Supply (Class A amplifier)
Although no practical comparison has been done between both designs at this stage.

regards
Prasi
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Old 4th March 2019, 01:10 AM   #7
prasi is offline prasi  India
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GB: CRCRC PSU
Additionally, the design has many options some of which are
1. take up of tvicol ideal bridge rectifier
2. CRCLC option
3. on board fuse
4. diode section cutoff and use of raw DC
5. separate grounding provision for small signals
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Old 4th March 2019, 09:35 AM   #8
xrk971 is offline xrk971  United States
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GB: CRCRC PSU
What inductor package is specified for the CRCLC option? It will need to be a high DC current one - perhaps Coilcraft shielded SMT with flat copper windings?

For example SER1400 series
Coilcraft SER1400 Power Inductors

http://www.coilcraft.com/dsindex/A9860-B.pdf
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Last edited by xrk971; 4th March 2019 at 09:40 AM.
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Old 4th March 2019, 11:48 AM   #9
prasi is offline prasi  India
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GB: CRCRC PSU
I have provided holes/faston connectors at 22.35mm pitch x 22mm wide.
So one is free to use anything here.
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Old 4th March 2019, 03:12 PM   #10
markus22ch is offline markus22ch  Switzerland
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Join Date: Aug 2007
GB: CRCRC PSU
Hi Prasi

4 for me please

Prasi- 4 nos.
Silasmellor - 4 nos.
Vunce- 4 nos.
Myint67- 2
Vasilis - 6
Hicoco - 2
Surfatwork - 2
manniraj - 4
Cl00sed(Rajesh) - 2
MD_Stryker - 4
xrk971 - 2
gary s - 4
Project16 - 2
bk856er - 2
Luke - 2
ymwong - 6
Pinnocchio - 2
883bkong-2
ipolyakov - 4
outtek - 1
Stixx - 2
markus22ch - 4

Total - 67
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