3886inv gainclone PCB,group buy

[digi01]

the 3886IGC boards detail here: 3886IGC
specifications:
high quality PCB,made in BEIJING CHINA.
double side board,the PCB size is 1.8 x 1.72 inch.
Caps, diameter max=20mm,2mm holes.
single channel design,2 boards for stereo amp.
$4USD per board.
shipping cost is $6USD,by air to anywhere.
10 sets(20 piece) is available.

can place order via mail vcgft@yahoo.com.cn
for payment,paypal is welcome.

BTW,the regulator PCB is available at the same time.
specifications:
high quality PCB.
double side board,1.8 x 1.72 inch.
big filter cap,diameter max=32mm,2mm holes.
2 boards for +/- rail power.purpose for general use.
$4USD per board.
10 sets(20 piece) is available.
project detail here: regulator psu.


regards
digi

 

[peranders]

You can run your show in the way you like but I recommend you to create a wiki page. It will be easier both for you and your customers to keep track of things. I think the unspoken rule is to keep things rather open when it comes to group deals. I think you have done a fine job and the board deserves to be offered to a wider audience.

Why don't you just copy the structure of this page?
http://www.diyaudio.com/wiki/index.php?page=Sj%F6str%F6m+Super+Regulator

 

[digi01]

thank you peranders
wiki is so cool,I have create one.

http://www.diyaudio.com/wiki/index.php?page=3886igc

cheers!

 

[maxw]

Saweet! I paid for 2 regulator boards

 

[KT]

All regulator boards are accounted for, and we have gone over some!

If you stop taking orders for the regulators at this point, I hope there are some extras for the overrun?

Thanks,
KT

 

[thomas997]

Good price

 

[digi01]

All regulator boards are accounted for, and we have gone over some!

If you stop taking orders for the regulators at this point, I hope there are some extras for the overrun?

Thanks,
KT

Really,it seems the design in general use is more popular
OK,then I will supply some extras for the overrun.

I will accept order from today till October 10.

regards

 

[JoeBob]

Quick question, these boards only do one rail, correct? For a dual mono with + and - rails one would need 4, right?

 

[digi01]

Yes,regulator board is single rail design.for dual mono need 4 pieces PCB.

Please wait for a moment,I am drawing a regulator hook method.

 

[digi01]

oh,finished.

digi

 

[digi01]

here are 3886inv gianclone partlist.

3886igc,1 PCB parts:
1000uf/50v *2
220k 1/2w *1 (gain setting)
10k 1/2w *1 (gain setting)
20k 1/4w *1 (mute)
LM3886 *1
0.1 , 5w *1 (option,output)
220k trim *1 (option,dc offset)
heat sink,screw,hook wires.


Regulator +/-rail,2 PCBs parts:
diode ,mur860 *8
1n4004 *2
LM338 *2
100n film cap *2
6800uf/50v *2
10uf/50v *2
100uf/50v *2
120 ohm 1/4w *2
2.2k 1/4w *2 (or 2.2K trim,output voltage adjust)
heat sink,screw,hook wires.

 

[digi01]

Here's the list of 3886INV and Regulator board groupbuyers:

digi01 China inv*4,regulator*4
tschrama Netherlands inv*4,regulator*4
Max Williams New Zealand inv*0,regulator*2
GaryB USA inv*0,regulator*4
KT USA inv*0,regulator*8
moving_electron USA inv*4,regulator*4
BrianGT USA inv*4,regulator*8

I will accept order till October 10.

 

[digi01]

Group Buy Close.
it is going beyond much than expected,thank everybody for everybody's participation.
I have contacted pcb house and begun to process.they need to process in 6-10 days.
All the orders will arrive by the end of October. (Approximate)
The wiki page has updated:http://www.diyaudio.com/wiki/index.php?page=3886igc

cheers
digi

 

[tschrama]

I received the boards today. Thank you very much Digi01! And a special thanks for the special DIY amulet I will use it as a goodluck charm for difficult soldering execises ....


cheers,
Thijs

 

[digi01]

Fine thank you for your confirmation.

good luck & best regards
digi

 

[jhead]

Will you be doing maybe a second group buy or will your boards be available on a permenant semi-permenant availability.Seems that I missed out on your thread

 

[peranders]

digi, isn't it a good idea to write the delivery date in the wiki page? I think my idea is very good, don't you think so too? I'll guess you will avoid my emails and posts here about this very simple thing.

I recommend all of you group buy organizers to have a column for recieved payment and one for delivery.

 

[digi01]

thank you P-A.you are always so friendship.

for jhead,I will do the second group purchase at the beginning of November.
Because the pcb house of Beijing needs certain batch and can just be processed.

digi

 

[jhead]

Thanks for the response.I do have a question just for clarification how many boards are needed to assemble a stereo amp?

 

[digi01]

an integrated stereo amp need 4 PCBs,2 of 3886igcPCB and 2 of regulatorPCB.

a dual mono assembled amp,need 6 PCBs,2 of 3886igcPCB and 4 of regulatorPCB.