### Author Topic: 2: The Schematic and parts list  (Read 252884 times)

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#### BWFalcon

##### Re: 2: The Schematic and parts list
« Reply #80 on: October 13, 2006, 12:33:23 PM »
This may be up here somewhere, but if not....
Here's something that helped me figure this out.  I haven't started building yet, I am still in learning mode.  I downloaded PSPICE and set up the circut.  If you copy this in, the output will be a nice little graph that shows the signal getting boosted.  Now I can change different component values and learn what they do.

VSUPPLY VCC 0 9v
VIN IN 0 AC 0.4 SIN(0 .2V 1K)

R_R1         \$N_0002 VCC  10k
R_R5         VCC \$N_0003  100k
C_C3         \$N_0003 \$N_0004  22u
Q_Q1         \$N_0002 \$N_0005 \$N_0004 Q2N2222
C_C1         \$N_0002 OUT  10u
C_C4         0 \$N_0007  47u
R_R2         0 OUT  100k
RT_R7         0 \$N_0007 {(5k*(1-0.5))+.001}
RB_R7        \$N_0007 \$N_0004 {(5k*0.5)+.001}
R_R3         \$N_0003 \$N_0005  10k
R_R4         0 \$N_0003  47k
C_C2         IN \$N_0005  .1u

.LIB
.TRAN .01E-03 2E-3
.PROBE
.END

#### Aron Allen

• Guest
##### Re: 2: The Schematic and parts list
« Reply #81 on: November 30, 2006, 04:01:44 PM »
Quote
Can you tell me how many capacitors, transistors & resistors there are in this circuit? Are there any more parts you need?

Why do you have a 100k resistor on the output to ground? it dosent really make sense unless you want to limit the output. As far as i know there is no DC after a capacitor, so i dont really se the purpose of it.

EDIT: By the way cool place ... and i found a name brother (there ain't many Arons in the world)
« Last Edit: November 30, 2006, 04:08:07 PM by Aron Allen »

#### mewithyou

##### Re: 2: The Schematic and parts list
« Reply #82 on: July 01, 2007, 07:53:07 PM »
i just got the big pack of resistors and caps just ceramic from radio shack but the caps just say like 1 or 7 or 10 and thats it what does that mean

#### aron

##### Re: 2: The Schematic and parts list
« Reply #83 on: July 02, 2007, 04:35:04 PM »
>caps just say like 1 or 7 or 10 and thats it what does that mean

I have no idea. Maybe it's just picofarads. Too small to really help.

#### GREEN FUZ

##### Re: 2: The Schematic and parts list
« Reply #84 on: July 02, 2007, 04:56:25 PM »
>caps just say like 1 or 7 or 10 and thats it what does that mean

I have no idea. Maybe it's just picofarads. Too small to really help.

I believe you`re right. 10pf =0.00001uF, not a value commonly seen in guitar circuits if I`m not mistaken. Maybe someone will correct me.

#### s.r.v.

##### Re: 2: The Schematic and parts list
« Reply #85 on: July 09, 2007, 10:00:48 PM »
what do you do with the ground wires? just solder them together?

#### 12milluz

##### Re: 2: The Schematic and parts list
« Reply #86 on: July 12, 2007, 10:43:46 PM »
well actually got my guitar tonight(electric, had an acoustic) but have been lookin at this site for a while. my question about making this pedal- does it need a switch/button? or is there just a knob sticking out of it?
Quote from: Processaurus
You need a glade plug-in, in on a footswitch.  Kick on the big muff, then hit the air freshener pedal.

Visit my site: http://www.freewebs.com/12milluzmusic

#### 12milluz

##### Re: 2: The Schematic and parts list
« Reply #87 on: July 12, 2007, 11:04:26 PM »
ok sorry, i saw bout the switch. what must the standards be on the LED as far as voltage?
Quote from: Processaurus
You need a glade plug-in, in on a footswitch.  Kick on the big muff, then hit the air freshener pedal.

Visit my site: http://www.freewebs.com/12milluzmusic

#### 12milluz

##### Re: 2: The Schematic and parts list
« Reply #88 on: July 19, 2007, 12:26:04 PM »
okay bought all my parts today from radioshack and the others are coming in the mail from aron. my question is how to we use that 8DIP?
Quote from: Processaurus
You need a glade plug-in, in on a footswitch.  Kick on the big muff, then hit the air freshener pedal.

Visit my site: http://www.freewebs.com/12milluzmusic

#### aron

##### Re: 2: The Schematic and parts list
« Reply #89 on: July 19, 2007, 01:17:53 PM »

#### 12milluz

##### Re: 2: The Schematic and parts list
« Reply #90 on: July 19, 2007, 02:13:08 PM »
okay, so i see you cut it in half longways, then cut one socket out?
Quote from: Processaurus
You need a glade plug-in, in on a footswitch.  Kick on the big muff, then hit the air freshener pedal.

Visit my site: http://www.freewebs.com/12milluzmusic

#### Wills831

##### Re: 2: The Schematic and parts list
« Reply #91 on: July 28, 2007, 07:00:03 AM »
I've seen people talking about LEDs in this circuit, i can't see any  and how would you wire up a jack socket? thanks

#### aron

##### Re: 2: The Schematic and parts list
« Reply #92 on: July 28, 2007, 01:04:28 PM »

#### Wills831

##### Re: 2: The Schematic and parts list
« Reply #93 on: July 31, 2007, 08:03:02 AM »
nope . i see it now, thanks

#### micro

##### Re: 2: The Schematic and parts list
« Reply #94 on: July 31, 2007, 12:20:08 PM »
Thanks for this tutorial Aron!

One question....

In the parts list you have 22uf cap listed but not in the picture
of collected components. Also in the picture there is a 100uf cap
thats not in the parts list.

#### aron

##### Re: 2: The Schematic and parts list
« Reply #95 on: July 31, 2007, 03:43:19 PM »
>In the parts list you have 22uf cap listed but not in the picture
of collected components. Also in the picture there is a 100uf cap

I don't see it. Maybe you are seeing 100V?

#### micro

##### Re: 2: The Schematic and parts list
« Reply #96 on: August 01, 2007, 01:56:05 AM »

hmmm...im a total noob, maybe im reading it wrong?
the one all the way to the right in the pic.

also there is no 22uf in the pic. right??

sorry i just was trying to follow this so closely cause this is my first project.

#### aron

##### Re: 2: The Schematic and parts list
« Reply #97 on: August 01, 2007, 03:15:08 PM »
Hehehehe YOU ARE RIGHT! No one seemed to catch this.

Just ignore this pic and go with what you know it should be.

Aron

#### iShawn

##### Re: 2: The Schematic and parts list
« Reply #98 on: October 19, 2007, 12:05:23 AM »
If one was feeling risky could one install a DPDT toggle switch that changes between 2 transistor types for different sounds?  Is the sound difference drastic enough to toggle between them?  Just though I'd make something that's a little different, and if you're installing a socket you're suggesting one might want to change the transistors easily (and for not messing the soldering up).  And what would be changed to add the treble boost mod that I've seen on here for this schematic?

#### aron

##### Re: 2: The Schematic and parts list
« Reply #99 on: October 19, 2007, 04:34:47 PM »
>If one was feeling risky could one install a DPDT toggle switch that changes between 2 transistor types for different sounds?  Is the sound difference drastic enough to toggle between them?

You could. But switching capacitors might yield more dramatic changes in sound.