OTT Design

[AngelLaHash]

Im a Plank, always go and try and push too much in one go.
Save time and just trying to fault find on a Bigger Circuit.

[url="http://www.impossibleband.com/projets-electroniques/megatone"]http://www.impossibl...niques/megatone[/url]
/\ i loved this design and tried to make it simple and ended up making it more complex /\
I mixed it with my own 4bit idear

The Fuzz bit didnt work for me on the AC128, I dont think i got it working last time ever.
I think It should have a 0-5nF, 5-10nF and 10-15nF with a stepping up of 330pF each turn
And a 0-30nF, 32-62nF and 64-94nF with a stepping up of 2nF each turn
Now some of the Values of the Higher version is a bit High but still 2nFish Step up (Just a average)
I personally cant hear a TONE difference
[url="http://player.vimeo.com/video/32754069"]http://player.vimeo.com/video/32754069[/url]

The Volume Pot/Switch for a Step Up

Was going to show the 4Bit Switch (from Lorlin, a sample they sent me) and the SPIDER of CAPS i put on it
but the picture was blurred

Edited May 26, 2013 by AngelLaHash

[AngelLaHash]

Well managed to get hold of a Good Binary Switch.

P-Bass that hooks on to a Push/Pull Switch and changed from Tone Pot (A500K) or going direct to the Binary Switch./ Push/Pull (Stepup)
---The other side of the PushPull Switch has a 1M5 Resisters going to a 1P4T (StepUp Rotary)
The Binary Switch then goes on to TWO lots of Caps [330p, 660p, 1n2 and 2n4]. and [2n, 4n, 8n & 16n]
What then Leads on to a Push/Pull (Stepup) Switch (selects between the two lots of Caps)
before moving on to 1P4T (StepUp Rotary) for the stepups [5n, 10n,15n & N/C] and [32n, 64n. 96n & N/C]
before ending up on another 1P4T (Boost Rotary) with [150K, 15K 1k5 & Ground]

Giving a Range 0-20nF in 330pF stepup
and 0-126nF in 2nF stepup
with the Push/Pull Switch gives a option between the Normal Style Tone and this MegaTone
with more of a Scope to pick from

<I couldnt get the Fuzz to work, i may have FAKE PNP from Germany >

[Myke]

[quote name='dave.c' timestamp='1372618080' post='2127778']
Looks interesting man but I have to admit I don't understand a word of it!
[/quote]

+1

[AngelLaHash]

Ok This would be the DREAM Circuit but i dont have a 2nd Hex that dose 0-15, i seem to have 1-15
what i guess in effect changes the start possition from 0-5 to 5-10

[url="http://www.strat-talk.com/forum/picture.php?albumid=2626&pictureid=17054"]http://www.strat-tal...pictureid=17054[/url]
I had to show the HEX Switch as 4xSwitchies lined up, thats basically how a Hex Switch work you can pick any of the 4 Switchs to be open/close.
the 3x2D2T switches have been linked like that just because i dont have a 1P4T
The 2x2P2T at the top left are the PUSH/PULL on the TONE
*This circuit should let you pick from 0-100nF in 150pF steps about, lets you switch between a Megatone/Tone*
and the 1x2P2T to bring in the 47nF cap is a PUSH/PULL on the Volume

At the moment the 2nd Hex is just a 1P4T Switch, Ill draw it later the circuit
*mine will do 0-15nF in 330pF and then 0-100nF in 2nF steps*

----
Two Circuits 1) Normal Tone 2) MegaTone
So liked them together, so i could "pull the knob" to flip between them.
The MegaTone uses a 1P12T switch, so i figured ill use a HEX with less Caps and a bit more of a range
Two Hex gets a BIG range with Lower Stepups
One Hex and 1P4T it was a Toggle (on/on/on) with a Push/Pull to set it in a High part.

----
On listening to the Demo Video, i think that one HEX and 1P4T will do nice


The 2x2P2T side by side are Push Pull Switchs on the Tone/Volume Pots
And the 3x2P2T are to show a 1P4T switch (i need a better circuit designer)
the 4x1P1T is to Show a Hex Switch (any of these switchs can be turned on, to make a combination)

Had to use a SineWave to show a Pickups should be, and a Load X on for the output.

Well the Computer says Im getting Feedback on my 1P4T with the Caps.. as it is really a switch i was just using as a 1P4T, i figured ill just use it as a 2P4T and it sorts that problem..
Now seems to be some feedback on the HEX switch :'(

Edited July 1, 2013 by AngelLaHash

[Beer of the Bass]

Regarding the AC128s, it looks like you're trying to use them as clipping diodes for a passive fuzz. Why not just use a pair of germanium diodes there? Although I've tried this and found it to be of little use due to the volume drop. Most of us want things to get louder, not quieter when switching in a fuzz!

[AngelLaHash]

I was using ac128 as that was what I had to hand, I scrapped it in the end was a pain.but I do have some germ diodes on order will come back to it later

[Img]https://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-prn2/978020_10200192632683354_791635556_o.jpg[/IMG]

Edited July 2, 2013 by AngelLaHash

[discreet]

[quote name='Myke' timestamp='1372620438' post='2127811']+1 [size=4][/quote][/size]
[size=4]+2 Not a clue! Great pics, though. [/size]

Edited July 2, 2013 by discreet

[AngelLaHash]

[quote name='discreet' timestamp='1372775836' post='2129795']
[/size]
[size=4]+2 Not a clue! Great pics, though. [/size]
[/quote]
Just look it as a variable cap (so every turn adds 220pF each turn)

If I was doing this for someone else
27, 13, 6.8 & 3.3nF with a push pull switch on the volume with a 47nF
Should give you 3.3-97nF ( so includes the fav values 100, 50, 47, 33, 22 & 10nF)
Extra switch so could do like I did, and move the jack in to the body.
<this is without the megatone bit> <the resisters at the end dose give it a extra touch, I like>

You could use it like the megatone, but only the high values

Edited July 2, 2013 by AngelLaHash