SoulSonic-Isolated A/B Splitter-Electronically Controlled

jimbob_400 · Post by **jimbob_400** » 26 Jun 2010, 11:30

soulsonic, is there any chance of seeing a schematic and/or pcb layout for this?

Intripped · Post by **Intripped** » 06 Jul 2011, 10:54

jimbob_400 wrote:soulsonic, is there any chance of seeing a schematic and/or pcb layout for this?

yes, it would be very appreciated!
Soulsonic is there any chance, please?

roseblood11 · Post by **roseblood11** » 06 Jul 2011, 11:07

+1!!!

And a bit more info about the transformer that you used...

It would be great to have a single sided pcb layout that fits with different transformers, most interesting for me would be Burkhard Lehles LTHZ:
http://www.google.de/imgres?imgurl=http ... 29,r:5,s:0

He sells them separately.Not cheap, but worth the prize..

Intripped · Post by **Intripped** » 06 Jul 2011, 11:53

the transformer is an Edcor PC 10K-10K http://www.edcorusa.com/products/123-pc10k-10k.aspx

coldcraft · Post by **coldcraft** » 06 Jul 2011, 13:03

"All units are wound with the finest virgin copper magnet wire. All windings use heavy insulated wire to provide excellent manufacturing yield, lower customer cost and superior life."

extra virgin copper. nice.

atreidesheir · Post by **atreidesheir** » 06 Jul 2011, 17:50

The opposite of this I suppose

Seiche · Post by **Seiche** » 06 Jul 2011, 18:14

roseblood11 wrote:+1!!!

And a bit more info about the transformer that you used...

It would be great to have a single sided pcb layout that fits with different transformers, most interesting for me would be Burkhard Lehles LTHZ:
http://www.google.de/imgres?imgurl=http ... 29,r:5,s:0

He sells them separately.Not cheap, but worth the prize..

how much is it?

and what's the difference to the one used by SoulSonic and the Xicon TM018 used by Musikding?

roseblood11 · Post by **roseblood11** » 07 Jul 2011, 07:44

The LTZH can be used with passive signals without any signal loss. I don´t know the prize exactly, 55 - 60€, I guess.
If you have a buffered signal anyway, it´s definitely overkill.

pz · Post by pz » 07 Jul 2011, 10:01

I did some testing when i was building a buffer/splitter for my pedalboard using TM018 trafos.
Here's a frequency response of an TM018 driven directly from OPA4227 voltage follower against direct opamp buffer output:

As you can see it rings at about 24kHz, but it is well beyond typical "guitar" bandwidth.
The tests were made using 24bit 96kHz external card, the output of the buffer was going into 1Mohm input impendance.

Intripped · Post by **Intripped** » 30 Aug 2011, 12:40

hi everybody! ..and happy to see freestompboxes back online

I have a general question about using a transformer for signal isolation:
in order to obtain a phase inversion, can I just reverse the poles of the secondary winding ?

Drzeus · Post by **Drzeus** » 30 Aug 2011, 13:45

Never buy a stomp switch from maplins.I bought 4 before i realised it wasn't bad luck,just bad switches.IMO,maybe others have had more luck than me?

deltafred · Post by **deltafred** » 30 Aug 2011, 19:54

Intripped wrote:hi everybody! ..and happy to see freestompboxes back online

I am pretty sure you speak for all of us there. There may of course be one or two exceptions but I doubt they will be posting too often now.

Intripped wrote: I have a general question about using a transformer for signal isolation:
in order to obtain a phase inversion, can I just reverse the poles of the secondary winding ?

Yes, you can reverse either the output winding or the input winding (but not both of them).