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).
Edit2:
FOr convenience a google sheet has been created as a dashboard for current status , which I will be updating every evening.
CRCRC GB LIST - Google Sheets
Edit 3: Notice
I am planning to place orders for few boards after the current lockdown in India is relaxed and people and companies will start working again. So, i am presently collecting interest from members so that all orders (this psu, lt4320 smd / THT rectifiers, etc) can be placed at one go.
All the specs of boards are mentioned above , but would like to mention a few more features.
1. it can take up LT4320 active rectifier bridge from my another GB instead of the regular diode bridge. The LT4320 will make up for loss of headroom due to CRCRC slightly.
2. it can take up TO-220 power resistors if ordinary resistors are not preferred.
3. With a bit of imagination, one could even connect a small CMX like my design posted for (Gtose and Mark Johnson CMX.
4. lot of options for resistors, capacitors and even diodes (to-220 and to-247)
5. with on-board snubbers one can eliminate transformer ringing with a proper jig from Mark Johnson's thread on quasi-modo snubbers.
I am currently working a slightly modified design of the LT4320 SMD rectifiers and will be able to place orders at the same time as this board. I can even manufacture a few boards of cap multiplier if any one is interested in that and be able to ship all of them in a single shipment..
So this makes it a very very neat and quiet 'little' psu for any class -A and Class-AB amplifier project.
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).
Edit2:
FOr convenience a google sheet has been created as a dashboard for current status , which I will be updating every evening.
CRCRC GB LIST - Google Sheets
Edit 3: Notice
I am planning to place orders for few boards after the current lockdown in India is relaxed and people and companies will start working again. So, i am presently collecting interest from members so that all orders (this psu, lt4320 smd / THT rectifiers, etc) can be placed at one go.
All the specs of boards are mentioned above , but would like to mention a few more features.
1. it can take up LT4320 active rectifier bridge from my another GB instead of the regular diode bridge. The LT4320 will make up for loss of headroom due to CRCRC slightly.
2. it can take up TO-220 power resistors if ordinary resistors are not preferred.
3. With a bit of imagination, one could even connect a small CMX like my design posted for (Gtose and Mark Johnson CMX.
4. lot of options for resistors, capacitors and even diodes (to-220 and to-247)
5. with on-board snubbers one can eliminate transformer ringing with a proper jig from Mark Johnson's thread on quasi-modo snubbers.
I am currently working a slightly modified design of the LT4320 SMD rectifiers and will be able to place orders at the same time as this board. I can even manufacture a few boards of cap multiplier if any one is interested in that and be able to ship all of them in a single shipment..
So this makes it a very very neat and quiet 'little' psu for any class -A and Class-AB amplifier project.
Attachments
Last edited:
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
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
Hello Prasi
How much of an improvement do you think your new design is over the version 1 board you sold last year?
Thanks
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
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
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
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
For example SER1400 series
Coilcraft SER1400 Power Inductors
http://www.coilcraft.com/dsindex/A9860-B.pdf
Last edited:
I have provided holes/faston connectors at 22.35mm pitch x 22mm wide.
So one is free to use anything here.
So one is free to use anything here.
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
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
Added Tome's order.
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
tome - 4
Total - 71
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
tome - 4
Total - 71
2 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
tome - 4
dewdrop - 2
Total - 73
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
tome - 4
dewdrop - 2
Total - 73
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
tome - 4
dewdrop - 2
Kokanee - 4
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
tome - 4
dewdrop - 2
Kokanee - 4
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
tome - 4
dewdrop - 2
Kokanee - 4
Total - 77😉
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
tome - 4
dewdrop - 2
Kokanee - 4
Total - 77😉
Ok guys,
I am now ready to order boards.
Tomorrow I will send the files to manufacturer.
I have fixed the quantity at 90 PCBs so as to take care of any last moment subscriptions.
regards
Prasi
I am now ready to order boards.
Tomorrow I will send the files to manufacturer.
I have fixed the quantity at 90 PCBs so as to take care of any last moment subscriptions.
regards
Prasi
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
tome - 4
dewdrop - 2
Kokanee - 4
BEYoung/US/6
Total - 83
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
tome - 4
dewdrop - 2
Kokanee - 4
BEYoung/US/6
Total - 83