Search found 69 matches
- 10 Sep 2014, 06:44
- Forum: Printed/Published Online Designs
- Topic: Class-A JFET / Triode Exaggerator
- Replies: 47
- Views: 20603
Re: Class-A JFET / Triode Exaggerator
Curious, will definitely give it a try!
- 20 Aug 2014, 01:56
- Forum: Printed/Published Online Designs
- Topic: Square to triangle wave conversion
- Replies: 7
- Views: 3900
Re: Square to triangle wave conversion
Interesting! Didn't know that relation. Thanks!
- 18 Aug 2014, 05:04
- Forum: Printed/Published Online Designs
- Topic: Square to triangle wave conversion
- Replies: 7
- Views: 3900
Re: Square to triangle wave conversion
You could use an integrator (an active low-pass filter without DC feedback). Though higher frequencies will create quieter outputs and lower frequencies might clip. Worth a try though!
- 11 Aug 2014, 00:56
- Forum: Printed/Published Online Designs
- Topic: Raygun Youth Chaos Fuzz
- Replies: 34
- Views: 22271
Re: Raygun Youth Chaos Fuzz
A bunch of 4046s just arrived. It feels like a sign. It was meant to be
- 03 Jul 2014, 01:59
- Forum: ICs (Integrated Circuits)
- Topic: Building A 4558 opamp from scratch.
- Replies: 20
- Views: 17597
Re: Building A 4558 opamp from scratch.
I find it tough to believe a discrete component op-amp will be better. You are adding in so many levels of inaccuracy and component variation that I am highly skeptical it will *imporve* performance. That Burson discrete op-amps page made me facepalm so hard for so many reasons. It was the "let...
- 11 Jun 2014, 02:15
- Forum: DIY Projects
- Topic: Generic I/O board for pedals, with bistable relay [documentation]
- Replies: 52
- Views: 13883
Re: Generic I/O board for pedals, with bistable relay [documentation]
Fantastic! Good effort, and thanks for the code! I'll definitely be studying it.
- 05 Jun 2014, 03:33
- Forum: Printed/Published Online Designs
- Topic: Servo Offset Biasing for JFETs
- Replies: 29
- Views: 14018
Re: Servo Offset Biasing for JFETs
Bump. Did you breadboard this? Did anyone? I am hungering for a way to bias jfets automatically. Also, it's fascinating to think about this stuff from a technical stand point. Really interesting design!
- 06 May 2014, 03:51
- Forum: DIY Projects
- Topic: Another Optical Compressor
- Replies: 52
- Views: 11023
Re: Another Optical Compressor
For some reason I can not see the original schematic. I think the host is blocked in my country. Could someone re upload it?
- 04 May 2014, 12:29
- Forum: Boutique Stompboxes dissected...
- Topic: Death By Audio - Robot [traced]
- Replies: 176
- Views: 69493
Re: Death By Audio - Robot [traced]
Awesome! Definitely going to try this out!
- 24 Apr 2014, 07:14
- Forum: Boutique Stompboxes dissected...
- Topic: Way Huge Echo-Puss
- Replies: 0
- Views: 1171
Way Huge Echo-Puss
Any interest in gut shots of this? Made of a main board and a two separate ones for the switch and another the jacks and power inputs. Main board is two sided with a combination of surface mounted and through hole bits. Can't tell if it is more than two layers. May be a few days (possibly Monday) be...
- 24 Apr 2014, 01:05
- Forum: Boutique Stompboxes dissected...
- Topic: Death By Audio - Robot [traced]
- Replies: 176
- Views: 69493
Re: Death By Audio - Robot [traced]
Which makes it all the more frustrating. I have 8 chips, 3 of them are giving me the same oscillation issue which makes me feel like I must have made a mistake that my quadruple checking isn't catching.
- 23 Apr 2014, 05:13
- Forum: Boutique Stompboxes dissected...
- Topic: Death By Audio - Robot [traced]
- Replies: 176
- Views: 69493
Re: Death By Audio - Robot [traced]
Interesting. I thought about trying out that method but wasn't sure if it'd work. I thought the resistor between "true" ground and -3.6v was needed for something special. I feel like a voltage regulator would provide slightly more reliable results though. I can't even tell if my issues are...
- 23 Apr 2014, 02:35
- Forum: Boutique Stompboxes dissected...
- Topic: Death By Audio - Robot [traced]
- Replies: 176
- Views: 69493
Re: Death By Audio - Robot [traced]
I'm definitely going to try out your method. Been having a nightmare with this pedal. Still haven't got it off the breadboard.
- 16 Apr 2014, 03:09
- Forum: DIY Projects
- Topic: "Little Angel" - Super Simple PT2399 Mini Chorus [documentation]
- Replies: 357
- Views: 62953
Re: "Little Angel" - Super Simple PT2399 Mini Chorus [documentation]
Isn't the Vref pin into the op-amps? How come that simulates the power being switched on and off?
- 15 Apr 2014, 05:15
- Forum: Boutique Stompboxes dissected...
- Topic: Bondi Effects - Sick As Overdrive
- Replies: 24
- Views: 17890
Re: Bondi Effects - Sick As Overdrive
I like the graphics. It's nice to see something that is aesthetically pleasing for once.
- 14 Apr 2014, 06:07
- Forum: DIY Projects
- Topic: "Little Angel" - Super Simple PT2399 Mini Chorus [documentation]
- Replies: 357
- Views: 62953
Re: "Little Angel" - Super Simple PT2399 Mini Chorus [documentation]
Can anyone help me understand how this chorus works? I don't understand how the PT2399 is working in this circuit and I don't get how it even creates the chorus sound
- 14 Apr 2014, 01:43
- Forum: Pedal Debugging & Troubleshooting Support
- Topic: HT8950 (DBA Robot) oscilating/whining?
- Replies: 0
- Views: 1957
HT8950 (DBA Robot) oscilating/whining?
Has anyone else here had issues with this or know what might cause it? I have built it off the attached schematic. However, on my breadboard all I get is a whine that vaguely interacts with the guitar but completely overpowers it. It does a bunch of weird things like stops making sound when I play c...
- 05 Apr 2014, 12:22
- Forum: Boutique Stompboxes dissected...
- Topic: Death By Audio - Robot [traced]
- Replies: 176
- Views: 69493
Re: Death By Audio - Robot [traced]
I breadboarded this one up but I am getting a very weird high pitch squeal that is adjustable with the degrade/robot knob. It totally drowns out any guitar signal going in. It also seems if I disconnect one of the three pins (12/13/14) from the little network it stops, but then the chip stops output...
- 17 Mar 2014, 01:28
- Forum: Modern Stompbox Effects (1975 - ...)
- Topic: MESA Grid Slammer tracing (schematic and vero layout inside) [schematic]
- Replies: 24
- Views: 15912
Re: MESA Grid Slammer tracing (schematic and vero layout ins [schematic]
Has anyone figured out what diffrence connecting the middle of the two sets of clipping diodes (a la Timmy) has yet? I'm really curious about that choice as it seems pointless to me.
- 06 Mar 2014, 03:40
- Forum: Boutique Stompboxes dissected...
- Topic: TC Electronic - Spark Booster [traced]
- Replies: 46
- Views: 25336
Re: TC Electronic - Spark Booster [traced]
Awesome! I had been looking for this.