3886inv gainclone PCB,group buy

[digi01]

hi all,congratulations!!thanks for your confirmation.I think all parcels will arrived around the christmas day.
Hope everybody utilizes this PCB to make the smart and satisfactory amplifier.

cheers😎

 

[KT]

Yes, please let us know when round 3 will take place. I am interested in 4 3886 boards and perhaps 2 more regulator boards.

Thanks,
KT

 

[Coulomb]

Hello Digi, I would be interested in another 4 of your BLD boards.

Regards

Anthony

 

[digi01]

OK,the round 3 gets under way😎

STUFF LIST:
- inverted 3886(standard single channel inverted LM3886 gainclone) PCB available.
- regulator power supply(single rail design,generic use)PCB available.
- BLD line driver(single channel unitary gain unbalance to balance adapter,generic use)PCB available.

HCUP,high capacitance unregulated power:
- HCUP-a(single rail design,generic use)the kit is available.
- HCUP-b(single rail design,generic use)the kit is available.
the edition is based on the article of NS AN1192,page 12.a typical unregulated bipolar power supply.the footprint of these caps is 300/400mil pins,44mm(max) diameter.
for KIT,includes PCB plus all caps.

If you would like to participate in this group buy please update this WIKI PAGE with the number of boards you wish to order and also send me a mail.

cheers!
digi

 

[Coulomb]

Hey Digi, what's the pricing on the Capacitor Boards? 4.4 CM is the max Diameter per Cap?

Regards

Antrhony

 

[digi01]

Yes,4.4 CM is the max Diameter per Cap.

the HCUP-a is $2 per PCB board,$10 per Kit.the HCUP-b is $4 per board,$16 per Kit.

NOTICE,for bipolar power supply need a couple of this.


digi

 

[Coulomb]

Yes,4.4 CM is the max Diameter per Cap.

the HCUP-a is $2 per PCB board,$10 per Kit.the HCUP-b is $4 per board,$16 per Kit.

NOTICE,for bipolar power supply need a couple of this.


digi

Kit? Do you mean PCB and Caps? What Brand and Value.

Regards

Merry Christmas

Anthony

 

[Evilsizer]

have the prices stayed the same for the boards digi? to make it easyier might want to post the prices on the wiki page. still haven't built mine yet... but i know i need more boards. *evil grin*

 

[digi01]

have the prices stayed the same for the boards digi? to make it easyier might want to post the prices on the wiki page. still haven't built mine yet... but i know i need more boards. *evil grin*

Yes,the price is same for igc,regulator and BLD.
thank you for your suggestion.I have modify the wiki page,the price posted.

 

[digi01]

Kit? Do you mean PCB and Caps? What Brand and Value.
Regards
Merry Christmas
Anthony

HCUP-a Kit contents:
PCB board - 2
ELNA standard caps - 4,10000uf/50V
ERO bipolar caps - 2
Rectifier bridge - 2,5A200V
Connector -2

HCUP-b Kit contents:
PCB board - 2
Nippon caps - 6,6800uf/50V
ERO bipolar caps - 2
Rectifier bridge - 2,5A200V
Connector -2

the picture of the Nippon caps attached.

 

[Coulomb]

Will you make just the PCB's available Digi?

Regards

Anthony

 

[digi01]

Yes,just PCB available is welcomed.

BTW,because the CAP boards is multi footprints design,here is another Pentium KIT available😎

HCUP-a Kit contents:
PCB board - 2
ELNA For audio caps - 8 ,4700uf/50V
ERO bipolar caps - 2 ,0.1uf/63V
Rectifier bridge - 2,5A200V
Connector -2

HCUP-b Kit contents:
PCB board - 2
ELNA For audio caps - 12 ,3300uf/40V
ERO bipolar caps - 2 ,0.1uf/63V
Rectifier bridge - 2,5A200V
Connector -2

enjoys

 

[Evilsizer]

since round three is up any chance of getting the bpa200 pcb you posted? cant seem to find it in the tech notes. what chip did they use for the bpa200 the 3875,3886,4780?

thanks

 

[digi01]

since round three is up any chance of getting the bpa200 pcb you posted? cant seem to find it in the tech notes. what chip did they use for the bpa200 the 3875,3886,4780?

thanks

That BPA200 layout is based on my hobby,it is a so big project of my layout experience.may be I have never process out it
I guess the chips that AN1192 article commend is LM3886.

 

[Evilsizer]

so would it be possible to get a pcb from ya this round? sorry didnt quite understand if you meant yes or no for that question.

 

[digi01]

it is not available now.

 

[Coulomb]

Hello Digi, I am not sure which PCB is what! There does not seem to be any clear labeling of what PCB is HCUP-a and HCUP-b??

Regards

Anthony

 

[digi01]

Hello Digi, I am not sure which PCB is what! There does not seem to be any clear labeling of what PCB is HCUP-a and HCUP-b??
Regards
Anthony

the HCUP-a board can mount 2 big caps or 4 small caps.
the HCUP-b can mount 3 big caps or 6 small caps.

the attached pic is the HCUP-a layout.

 

[Ipanema]

Hi Digi,

Since LM4780 contains two identical LM3886 chips, the board size of BPA200 will be reduced if LM4780 is used instead.

😀

 

[transducer]

Hi digi,

Are the regulator boards still available? I'd be interested in order enough for 6 channels of GCSS, so 12 regulators total. Actually for a GCSS (super symetric) would I need 24 regulators, since each channel uses 2xLM3886?

Thanks,
Ron