Shin-ei/Univox Uni-Vibe [Replica Files]

sinner · Post by **sinner** » 12 Oct 2012, 15:59

BTW

B C E
Q1 1.01 2.42 1.18
Q2 2.42 2.33 1.84
Q3 4.76 10.77 4.20
Q4 4.51 15.54 4.62
Q5 4.62 11.79 4.01
Q6 3.84 15.55 3.85
Q7 3.85 12.21 3.26
Q8 4.15 15.54 4.18
Q9 4.18 12.10 3.59
Q10 5.77 15.57 5.64
Q11 3.46 19.22 10.77
Q12 10.77 19.18 10.42
Q13 5.62 14.21 2.03

Univibe (real one) voltages. Clearly shown internal transformer secondaries, which is really close to 20VDC (+/- 19.20 after the diode in line with V+)

Measurements taken by our friend The Rotagilla

kymar · Post by **kymar** » 12 Oct 2012, 16:05

Actually you are exaggerating the risk.
What about the noise, how noisy is the UV in fact?
With competent arrangement of components shouldn`t be any voltage induction.

kymar · Post by **kymar** » 12 Oct 2012, 16:10

In Wattson scheme we have 22v after rectifier diode

kymar · Post by **kymar** » 12 Oct 2012, 16:14

is obtained we should have 18 volts at the input of the device?

sinner · Post by **sinner** » 12 Oct 2012, 16:17

kymar wrote:Actually you are exaggerating the risk.
What about the noise, how noisy is the UV in fact?
With competent arrangement of components shouldn`t be any voltage induction.

With lil human around you there is no risk exaggeration

This is not only my errors hazard. Fluids around your pedalboard - bear, coffee (tea in UK) washing machine failure, unhappy audience urine, no matter - can kill you if split over your fancy, mains powered opto phaser...

In Wattson scheme we have 22v after rectifier diode

There is no regulator circuits in the walls, voltage always vary depend of the part of the day, or home equipment power consumption. I wouldn't argue about this topic to much

sinner · Post by **sinner** » 12 Oct 2012, 16:26

Found it, quote by RG.Keen

The ones I measured were about 18-19Vdc unregulated, and the R-C sections dropped that down to about 16Vdc on the audio phase line. But there were at least two releases of the PCB, perhaps they had different versions of the power transformer too. The 16Vdc is why I picked a 7815 regulator for the first Neovibes, back in the 90s. I've had lots of testimony from builders over the last decade or so that those duplicate the original Univibe sound if built correctly, even with (only) 15V in the signal line.

andregarcia57 · Post by **andregarcia57** » 20 Oct 2012, 19:16

beedotman wrote:Here's gut shot:

what is the stereo jack that you are using to control external expression pedal?

http://www.banzaimusic.com/Jack-STE-LUGS-ECO.html
http://www.banzaimusic.com/Amphenol-ACJS-MHS.html

thanks

fakcior · Post by **fakcior** » 21 Oct 2012, 06:51

It has to be switched, like this one: http://www.banzaimusic.com/Cliff-STE-LUGS-BLK.html

beedotman · Post by **beedotman** » 26 Oct 2012, 19:07

drilling.... DONE!
resistors.... DONE!
diodes.... DONE!

sinner · Post by **sinner** » 26 Oct 2012, 19:54

beedotman wrote:drilling.... DONE!
resistors.... DONE!
diodes.... DONE!

Well DONE

ED5150 · Post by **ED5150** » 28 Oct 2012, 03:43

beedotman wrote:drilling.... DONE!
resistors.... DONE!
diodes.... DONE!

What diodes are you using? 1N4001?

beedotman · Post by **beedotman** » 28 Oct 2012, 10:15

ED5150 wrote:
beedotman wrote:drilling.... DONE!
resistors.... DONE!
diodes.... DONE!

What diodes are you using? 1N4001?

yup!

danielzink · Post by **danielzink** » 29 Oct 2012, 01:32

beedotman wrote:
ED5150 wrote:
beedotman wrote:drilling.... DONE!
resistors.... DONE!
diodes.... DONE!

What diodes are you using? 1N4001?
yup!

That brown Paxolin is dead sexy.....as well as all those carbon comps....

Who did your board....

and where'd you source the resistors ?

Dan

Fastocker · Post by **Fastocker** » 29 Oct 2012, 04:57

Oh lordy, I want one of those brown boards . . . . . somebody sell me one!

beedotman · Post by **beedotman** » 29 Oct 2012, 08:41

danielzink wrote: That brown Paxolin is dead sexy.....as well as all those carbon comps....

Who did your board....

and where'd you source the resistors ?

Dan

ask Brook from http://pigeonfx.com, maybe he will be able to eatch pcb's on paxolin for ya
pcb layout is availiable on http://turretboard.org

AB resistors are from ebay - from this seller:
https://www.ebay.com/usr/bigsmythe74
not cheap project, though..

sinner · Post by **sinner** » 29 Oct 2012, 09:41

Yep, Brook have my blessing, tons of experience, and load of paxolin to supply half of the world with UV replica boards

Anyway, my entry - 915 spec first

beedotman · Post by **beedotman** » 29 Oct 2012, 12:11

Najs!

What trannies did You used?

sinner · Post by **sinner** » 29 Oct 2012, 15:59

BC183L's

andregarcia57 · Post by **andregarcia57** » 29 Oct 2012, 17:01

what is the difference between sound schemes?

(factory) (J.Sproul)

thanks

sinner · Post by **sinner** » 29 Oct 2012, 19:32

andregarcia57 wrote:what is the difference between sound schemes?

(factory) (J.Sproul)

thanks

Yes, have you seen our website?