CRC Power Supply (Class A amplifier)

[Project16]

Hi Project16, it would be a good idea to attach sch in the first post, as it will be of help. you have the rights to modify first post as you are the OP.
regards
Prasi

I do not have the possibility to add an image, I will contact an administrator to integrate the schema in the first post.

 

[manniraj]

Hello manniraj

Connect the diode bridges like this. I think I did not make a mistake.

Thanks Project16, so if I understand your connections correctly you are saying to connect the transformer secondaries directly to the AC1 & AC2 pins on the CRC board. And then also connect the wiring as per your markings to the external bridge rectifier modules to the CRC board. So this way the diode sections of the CRC board is completely bypassed to the external module and still use the AC pins with the transformer.

 

[Mario Pankov]

Hi, where is the group order up to? I want to jump in if not yet late?

 

[prasi]

Hi, where is the group order up to? I want to jump in if not yet late?

Yes all 150 boards ordered are booked. Few more people seem interested , let's make a reserve list with diy user name and number of boards required. If qty is sufficient I could order few more to fulfil it.

Reg
Prasi

 

[PauloPT]

Do these heatsinks fit the board?

http://pt.mouser.com/ProductDetail/Ohmite/RA-T2X-25E/?qs=sGAEpiMZZMttgyDkZ5WiumlCfl50RTwzNmiDEJFKCtw%3d

Thanks

 

[prasi]

With R series, one would not be able to fit 2 diodes back to back. With F series, one would be able to fit back to back diodes.
Get the F series sinks, 1.5in or 2 in height. Even 2.5 in.
You would also be able to fit to-247 diodes .

 

[PauloPT]

With R series, one would not be able to fit 2 diodes back to back. With F series, one would be able to fit back to back diodes.
Get the F series sinks, 1.5in or 2 in height. Even 2.5 in.
You would also be able to fit to-247 diodes .

Thanks! 🙂 thank you also for shipping the boards 🙂

 

[Project16]

Thanks Project16, so if I understand your connections correctly you are saying to connect the transformer secondaries directly to the AC1 & AC2 pins on the CRC board. And then also connect the wiring as per your markings to the external bridge rectifier modules to the CRC board. So this way the diode sections of the CRC board is completely bypassed to the external module and still use the AC pins with the transformer.

Yes that is correct.

 

[prasi]

GB-3 Status update

analogdiy 4 boards (confirmed),yes, 4 , shipped
PauloPT 2 boards (confirmed), yes, 2, shipped
Voysto 4 boards (confirmed),yes, 4
ravid 4 boards +2 (confirmed), 6, shipped
touchdown 4 boards (confirmed),yes , 4, shipped

xrk971 (ver1 or ver 2) 8 boards (confirmed), YES, 8, shipped
avinunca 2 boards (confirmed),yes, 2, shipped
AdeS 2 boards (confirmed),yes, 2, , shipped
bk856er 4 boards (confirmed),yes, 4, shipped
Lutto 4 boards (confirmed), yes, 4, will ship tomorrow


redarc12 4 boards (confirmed),yes, 4, shipped
bambadoo 4 boards (confirmed), YES, 4, shipped
Philipp23 8 boards (confirmed),yes +2, 10
hui13 4 boards (confirmed),yes, 4, , shipped
patriz 4 boards (confirmed), YES, 4, , shipped
Project16 2 boards YES, 2, shipped
Prasi+friends 6 boards , 6
asanden 4 boards, yes, 4, shipped
jpr_pt 4 boards, yes, 4, shipped
spind 4 boards, yes, 4, shipped

potepuh 4 boards, yes+JLH2003(2pcb), 4, , shipped
Dennis Hui 4 boards, yes, +2+2, 8, shipped
Carmaux 4 boards YES, 4
bandol83 4 boards* YES, 4, , shipped
marcus1 4 boards, YES, 4, , shipped
themystical 4 boards, yes, 4, , shipped
aubmar 2 boards, yes, 2, shipped
ZRXSHACK 2 boards, YES,+4, 6, shipped

rephil 10 boards , yes, 10, shipped
ermine22 6 boards, 6, yes, shipped
ppap64 4 boards, 4, yes, , shipped
JLOP 4 boards, 4 yes, , shipped
ovidiu1 2 boards, 2, , shipped

slartibartfasst, 2 boards, shipped

Here is the status as of today and will again update tomorrow.
To lutto, your shipment happening tomorrow will depend upon whether I receive the payment from remaining people.

 

[Project16]

The schematic of this power supply has been added on the first post of this thread.

 

[AndrewT]

Teamwork works for the benefit of all.

 

[prasi]

The schematic of this power supply has been added on the first post of this thread.

Thank you very much Project16. It will be very very convenient for builders.

Regards
Prasi

 

[prasi]

Update GB-3

analogdiy 4 boards (confirmed),yes, 4 , shipped
PauloPT 2 boards (confirmed), yes, 2, shipped
Voysto 4 boards (confirmed),yes, 4, kindly respond
ravid 4 boards +2 (confirmed), 6, shipped
touchdown 4 boards (confirmed),yes , 4, shipped

xrk971 (ver1 or ver 2) 8 boards (confirmed), YES, 8, shipped
avinunca 2 boards (confirmed),yes, 2, shipped
AdeS 2 boards (confirmed),yes, 2, shipped
bk856er 4 boards (confirmed),yes, 4, shipped
Lutto 4 boards (confirmed), yes, 4, shipped


redarc12 4 boards (confirmed),yes, 4, shipped
bambadoo 4 boards (confirmed), YES, 4, shipped
Philipp23 8 boards (confirmed),yes +2, 10, kindly respond
hui13 4 boards (confirmed),yes, 4, shipped
patriz 4 boards (confirmed), YES, 4, shipped
Project16 2 boards YES, 2, shipped
Prasi+friends 6 boards , 6
asanden 4 boards, yes, 4, shipped
jpr_pt 4 boards, yes, 4, shipped
spind 4 boards, yes, 4, shipped

potepuh 4 boards, yes+JLH2003(2pcb), 4, shipped
Dennis Hui 4 boards, yes, +2+2, 8, shipped
Carmaux 4 boards YES, 4, kindly respond
bandol83 4 boards* YES, 4, shipped
marcus1 4 boards, YES, 4, shipped
themystical 4 boards, yes, 4, shipped
aubmar 2 boards, yes, 2, shipped
ZRXSHACK 2 boards, YES,+4, 6, shipped

rephil 10 boards , yes, 10, shipped
ermine22 6 boards, 6, yes, shipped
ppap64 4 boards, 4, yes, shipped
JLOP 4 boards, 4 yes, shipped
ovidiu1 2 boards, 2, , shipped

slartibartfasst, 2 boards, shipped

Here is the status as of today and will again update tomorrow.
To lutto, your shipment is done, with a special exclusive trip to post office🙂.. To the remaining guys, pl respond.[/QUOTE]

 

[prasi]

analogdiy 4 boards (confirmed),yes, 4 , shipped
PauloPT 2 boards (confirmed), yes, 2, shipped
Voysto 4 boards (confirmed),yes, 4, shipped
ravid 4 boards +2 (confirmed), 6, shipped
touchdown 4 boards (confirmed),yes , 4, shipped

xrk971 (ver1 or ver 2) 8 boards (confirmed), YES, 8, shipped
avinunca 2 boards (confirmed),yes, 2, shipped
AdeS 2 boards (confirmed),yes, 2, shipped
bk856er 4 boards (confirmed),yes, 4, shipped
Lutto 4 boards (confirmed), yes, 4, shipped


redarc12 4 boards (confirmed),yes, 4, shipped
bambadoo 4 boards (confirmed), YES, 4, shipped
Philipp23 8 boards (confirmed),yes +2, 10, will ship tomorrow
hui13 4 boards (confirmed),yes, 4, shipped
patriz 4 boards (confirmed), YES, 4, shipped
Project16 2 boards YES, 2, shipped
Prasi+friends 6 boards , 6
asanden 4 boards, yes, 4, shipped
jpr_pt 4 boards, yes, 4, shipped
spind 4 boards, yes, 4, shipped

potepuh 4 boards, yes+JLH2003(2pcb), 4, shipped
Dennis Hui 4 boards, yes, +2+2, 8, shipped
Carmaux 4 boards YES, 4, will ship tomorrow
bandol83 4 boards* YES, 4, shipped
marcus1 4 boards, YES, 4, shipped
themystical 4 boards, yes, 4, shipped
aubmar 2 boards, yes, 2, shipped
ZRXSHACK 2 boards, YES,+4, 6, shipped

rephil 10 boards , yes, 10, shipped
ermine22 6 boards, 6, yes, shipped
ppap64 4 boards, 4, yes, shipped
JLOP 4 boards, 4 yes, shipped
ovidiu1 2 boards, 2, , shipped

slartibartfasst, 2 boards, shipped

tomorrow all shipping activity will be completed.

 

[h-wan]

Hi Prasi,
I'm also interested on your boards.
Please take me on the reserve list.

h-wan
6 boards

Many thanks and greetings from Vienna
Helmut

 

[prasi]

Hello h-wan,
Greetings and Welcome aboard the CRC wagon.
Right now I am out of boards. However I just ordered limited edition boards with blue solder mask (rest all specs same) 50 nos. for a local hi Fi store.

They will be available in another 18 -20 days. Will be able to supply from that lot.

Stay tuned.

Regards
Prasi

 

[prasi]

analogdiy 4 boards (confirmed),yes, 4 , shipped
PauloPT 2 boards (confirmed), yes, 2, shipped
Voysto 4 boards (confirmed),yes, 4, shipped
ravid 4 boards +2 (confirmed), 6, shipped
touchdown 4 boards (confirmed),yes , 4, shipped

xrk971 (ver1 or ver 2) 8 boards (confirmed), YES, 8, shipped
avinunca 2 boards (confirmed),yes, 2, shipped
AdeS 2 boards (confirmed),yes, 2, shipped
bk856er 4 boards (confirmed),yes, 4, shipped
Lutto 4 boards (confirmed), yes, 4, shipped


redarc12 4 boards (confirmed),yes, 4, shipped
bambadoo 4 boards (confirmed), YES, 4, shipped
Philipp23 8 boards (confirmed),yes +2, 10, Shipped
hui13 4 boards (confirmed),yes, 4, shipped
patriz 4 boards (confirmed), YES, 4, shipped
Project16 2 boards YES, 2, shipped
Prasi+friends 6 boards , 6
asanden 4 boards, yes, 4, shipped
jpr_pt 4 boards, yes, 4, shipped
spind 4 boards, yes, 4, shipped

potepuh 4 boards, yes+JLH2003(2pcb), 4, shipped
Dennis Hui 4 boards, yes, +2+2, 8, shipped
Carmaux 4 boards YES, 4, shipped
bandol83 4 boards* YES, 4, shipped
marcus1 4 boards, YES, 4, shipped
themystical 4 boards, yes, 4, shipped
aubmar 2 boards, yes, 2, shipped
ZRXSHACK 2 boards, YES,+4, 6, shipped

rephil 10 boards , yes, 10, shipped
ermine22 6 boards, 6, yes, shipped
ppap64 4 boards, 4, yes, shipped
JLOP 4 boards, 4 yes, shipped
ovidiu1 2 boards, 2, , shipped

slartibartfasst, 2 boards, shipped

request all to post here as and when you receive it or PM me. I shall update the list every week.

 

[prasi]

Initial list for GB-4

initial list for GB-4

h-wan 6 boards
av-trouvaille 6 boards

 

[avinunca]

Hi Prasi. Boards arrived safely. Thank you for your hard work.

 

[prasi]

Hi Prasi. Boards arrived safely. Thank you for your hard work.

great!, thanks for confirmation.