Mu-Tron Bi-Phase

classic Classic list List threaded Threaded
64 messages Options
1234
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Mu-Tron Bi-Phase

PMowdes
Has anyone tried to make a vero of this??



 I've seen someone etched a pcb over on DIY

http://www.diystompboxes.com/smfforum/index.php?topic=69894.msg561062#msg561062

Looks like a bit of a beast, maybe i'll give it a go in eagle :)
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

PMowdes
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

Travis
Administrator
This is definitely something that needs to be done on PCB. It's something I've dreamed about forever, but since I can't even figure out how to use Eagle at all it's way over my head lol

If someone wants to work on a PCB layout I'm happy to help in whatever way possible, whether that's helping to pay for a batch of PCBs or testing or whatever.

One thing I gotta say is that it will be important to use the buffers to avoid ticking issues. I have the original Phasor II and the buffer is awesome. I built a clone without the buffer and didn't get ticking issues, but I see many, if not most people have ticking issues when they omit the buffering

If we could make a PCB with board mounted pots and switches, this would be the most amazing phaser build ever!!!
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

PMowdes
I'm happy to have a go, I'm getting pretty good with Eagle.

The issues for me will be identifying parts and the off board stuff.

If you're happy to help I'll have a crack and see where I we get to.

I'll put up the schematics that I've found to see if they make sense.
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

PMowdes
Do these look right to you Travis?







Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

rocket88
Administrator
i'm down for helping to where i can. been after ones of these for too many years and never having enough cash. lol

i found this site awhile ago when i was looking at trying to figure out how to make one. it has the schematic for each of the 3 main parts, the sweep generators, power supply, and filters.
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

PMowdes
In reply to this post by PMowdes




Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

PMowdes
1st question

What sort of transformer do i need here?  My eagle library suggests something from mouser in the 42T series but i haven't got a clue.



Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

zombie_rock123
Isn't that transformer just going from mains to pedal power? I guess if there's a known ticking issue then stepping up with a charge pump is probably a bad idea, unless you've got it three streets away hidden behind a few doors. Could you not compromise and use a 18/24 dc volt input to split into the regulators?

Edit: Looking at the voltages mentioned I think it is the wall power being scaled down.
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

Travis
Administrator
In reply to this post by PMowdes
Those are the power transformer and rectifier and filter caps.

With the Phasor II clones we've been doing, the 7660S is fine and the stock buffer will avoid ticking issues. My concern is current consumption for something as complicated as the biphase, I'm not sure if the standard charge pump ICs can handle it. We'd need to get an idea of the current consumption but I may be over estimating the current consumption of the additional active components. It may just work out to where the transformer is the best option
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

PMowdes
Travis wrote
Those are the power transformer and rectifier and filter caps.

With the Phasor II clones we've been doing, the 7660S is fine and the stock buffer will avoid ticking issues. My concern is current consumption for something as complicated as the biphase, I'm not sure if the standard charge pump ICs can handle it. We'd need to get an idea of the current consumption but I may be over estimating the current consumption of the additional active components. It may just work out to where the transformer is the best option
I'll leave that till later then.  I've made a start on the effect schematic and I got about half way through last night,  I've also began to write out the BOM so I can cross check whats on the circuit

This is going to need some serious checking before I attempt the board layout I think.
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

PMowdes
This post was updated on .
Anyone care to identify this



edit:  scrub that I figured it out
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

PMowdes
In reply to this post by PMowdes
I should be done with the schematic for the control board later today.  

Anybody want volunteer to help check it over before I attempt the PCB design??
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

Travis
Administrator
Oh yeah dude post it for sure! I can't say I'll give you a definitive answer right away, but I'll look, and I'm sure others will too!
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

PMowdes

I've just about finished the schematics for this in Eagle but I'm having a bit of a fun time figuring out the off board wiring,  particularly the wiring between the power, effects and control boards.

I also can't figure out the J6 (the external pedal switch)  pins 4 and 5 seem to be used for an external expression pedal but I can't find where on the schematics they are attached.
Also the gnd pin on the pedal seems to ground through the corresponding pin on the control board,  does this go through the 1M resistor or is there something I'm missing.

Any help would be greatly appreciated

Cheers

Phil
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

PMowdes
The missing piece of the puzzle

Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

ξεναγος νεκροπολης
i'm leaving this here, cause that's something similar that i would love to build someday too...
http://www.freestompboxes.org/viewtopic.php?f=19&t=13208&start=60

http://www.freestompboxes.org/viewtopic.php?f=19&t=22162

Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

PMowdes

Savvas

Once I get this BiPhase nailed i'll have a look.  Are there schematics in those threads??
Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

PMowdes

Progress on the effects board

Reply | Threaded
Open this post in threaded view
|  
Report Content as Inappropriate

Re: Mu-Tron Bi-Phase

zombie_rock123
Loving the symmetry!
1234
Loading...