Buffered Mult stripboard

modularplanner · Post by **modularplanner** » Sat Sep 11, 2010 8:49 pm

Hi,

I've laid out this stripboard for the buffered mult schematic from MFOS here. As I've never done anything like this before could someone spend 5-10mins to check and tell me if what I've done is totally wrong or not

It's the non attenuated version on the right of the schematic.

Adam-V · Post by **Adam-V** » Sat Sep 11, 2010 9:29 pm

I haven't checked the circuit but you'll want to put some sort of supply bypass capacitors on there.
A 100n from pin 4 to pin 11.
Maybe a 10uF 16V electro from each of the supply lines to ground(watch the polarity)

Cheers,
Adam-V

Neutron7 · Post by **Neutron7** » Sat Sep 11, 2010 10:43 pm

Instead of those 2 wires from the CV input to the op amps on the opposite side of the chip from the connectors, why dont you just NOT cut the traces under the IC. it will save you work twice

and you could save more wire, and make the feedback path shorter and better by doing this.

white blocks show where the traces have been cut.
black x are wires you dont need, and i added some little purple ones.
and yeah, add some capacitors. at least 0.1 u between power and ground.

modularplanner · Post by **modularplanner** » Sun Sep 12, 2010 5:19 am

Many thanks for checking that over, and the optimisations

now to order a couple of IC's.

Here is the cleaned up layout.

Blinkar blå · Post by **Blinkar blå** » Sun Sep 12, 2010 6:53 am

Stupid noob question:
Could/would you use this as an audio splitter, or is it CV only?

Neutron7 · Post by **Neutron7** » Sun Sep 12, 2010 8:47 am

It will work fine for audio or CV

That looks a lot cleaner, smaller, and easier for you to build!
I would just make one more change which is try and put both capacitors right next to the IC

by the way is that a program that puts components on stripboard? it could be quite handy!

modularplanner · Post by **modularplanner** » Sun Sep 12, 2010 10:21 am

Yeah it's called DIY Layout creator, you can get it here

Neutron7 · Post by **Neutron7** » Sun Sep 12, 2010 12:41 pm

Thanks! thats a cool program and should come in useful!

amsonx · Post by **amsonx** » Wed Sep 22, 2010 1:28 am

modularplanner wrote:Yeah it's called DIY Layout creator, you can get it here

sorry for hijacking the thread but there is somethig of similiar for macosx ?

decaying.sine · Post by **decaying.sine** » Wed Sep 22, 2010 2:14 am

amsonx wrote:
modularplanner wrote:Yeah it's called DIY Layout creator, you can get it here
sorry for hijacking the thread but there is somethig of similiar for macosx ?

are you looking for something like Fritzing? http://fritzing.org/

amsonx · Post by **amsonx** » Wed Sep 22, 2010 2:30 am

Wow..i think this is perfect for my pourpose.
thanks a lot

diego

negativspace · Post by **negativspace** » Wed Sep 22, 2010 2:40 am

Funny, I was just poking around last week for something like this. Thanks!

Luka · Post by **Luka** » Wed Sep 22, 2010 3:17 am

decaying.sine wrote:
amsonx wrote:
modularplanner wrote:Yeah it's called DIY Layout creator, you can get it here
sorry for hijacking the thread but there is somethig of similiar for macosx ?
are you looking for something like Fritzing? http://fritzing.org/

i tip my hat to you sir

Neutron7 · Post by **Neutron7** » Fri Oct 01, 2010 10:23 pm

did you build using that layout yet?

prinsen · Post by **prinsen** » Sat Oct 02, 2010 1:24 am

modularplanner wrote:Here is the cleaned up layout.

The upper output is not buffered. You need to solder the red wire to pin 2, rather than pin 3.

Neutron7 · Post by **Neutron7** » Sat Oct 02, 2010 1:29 am

that is tight spotting prinsen!

haha not in the original or my "ugly" version, i wonder if anyone would notice

Thonk Support · Post by **Thonk Support** » Wed Oct 12, 2011 2:31 pm

Did you build this in the end?

corex · Post by **corex** » Wed Oct 12, 2011 6:28 pm

amsonx wrote:sorry for hijacking the thread but there is somethig of similiar for macosx ?

It's a Java app -- should run fine on macos.

falafelbiels · Post by **falafelbiels** » Wed Oct 12, 2011 6:55 pm

Hey Fritzing seems cool, thanks!

patchdub · Post by **patchdub** » Wed Oct 12, 2011 8:47 pm

this is great and
would anything need to change to make this work with 15v?

bwhittington · Post by **bwhittington** » Wed Oct 12, 2011 9:01 pm

Oh, sweet. I'd been poking around for a buffered multiple circuit. Thanks!

negativspace · Post by **negativspace** » Wed Oct 12, 2011 11:39 pm

So I just got an order for a couple of buffered multiples from a customer last week... making this a very timely thread. I will probably lay out a simple PCB for the circuit & will no doubt use some of the knowledge in that other thread - thanks for the link.

Looks like maybe sharing that PCB via a group-buy would be helpful?

regenbot · Post by **regenbot** » Thu Oct 13, 2011 12:22 am

negativspace wrote:
Looks like maybe sharing that PCB via a group-buy would be helpful?

yes, please

patchdub · Post by **patchdub** » Thu Oct 13, 2011 12:25 am

negativspace wrote:
Looks like maybe sharing that PCB via a group-buy would be helpful?

please please!

fivesteppath · Post by **fivesteppath** » Thu Oct 13, 2011 12:40 am

MOD WIGGLER

MOD WIGGLER

Buffered Mult stripboard

Buffered Mult stripboard

audio?