Search results

To be fair, I don't think a board that accepts the Colour modules would be hard to make. A DC-DC module to get the right power supply and an input and output buffer is really all that would be needed.

Been thinking about making one of these for a while, probably won't go the transformer route though and use a DC-DC module for power. I'm also thinking of sandwiching the circuit with a tilt and NE570 companding setup.

It shouldn't be so extreme though, that really indicates that there's an issue with the neck alignment, the frets, or both. Also have you tried adjusting the heights of your pickups? Sometimes if they sit in a particular position they can be accidentally located in a sort of node.

To talk about the headroom issues for a second in various pedals, it's basically impossible to design those out of certain circuits. BBD based devices such as analogue chorus and delays, OTA based compressors, and a few other things are just limited by needing lower inputs. No amount of swapping...

The root cause is definitely something in the guitar setup, what you describe shouldn't happen if the guitar is set up optimally., from a physics perspective those frets should actually produce less energy because they vibrate less. However, tbh I wouldn't use an optical compressor for this...

How sustained are these transients? If you need an attack time of essentially zero then you are probably better off using a soft clipper. What kind of FX are you needing to limit the input to? There's no such thing as a free lunch when it comes to signal processing so it helps to have as many...

I don't trust any actives from Ali Express, or eBay for the most part to be honest. SMD is the way to go with JFETs these days, the 2sk209 series are a pretty good sub for the 184.

I have since tested it with some Germs the TC-1 did just fine testing and the TC-4 still falls short. If all you want is a scope and signal generator I actually recommend one of the options without the tester. They're cheaper but have the same oscope functionality. Both the 153 and 510 have a...

Based on the quality of the PCB course I'm not keen on another Wampler course.

I thought it would be a good exercise as I learn more about circuits to annotate a schematic and describe and calculate the important features. Though in calculating some of the filter values, there's clearly some impedance considerations I'm not accounting for because some of these filters are...

I picked up these pots and the associated bobbin https://nz.mouser.com/ProductDetail/871-B65661W0000R030 What's the best way to calculate how many turns you need for a given inductance?

You've heard or even used plenty of circuits with X7R caps in the signal path. One way to minimise the "downsides" is to over spec the voltage of X7Rs and Electros.

That's actually a great idea.

The inductor is almost certainly part of some kind of power regulation and filtering circuit.

Awesome thanks for your help, I think I'm beginning to understand a bit more about DC and biasing here.

Ok so let's say instead the FET/BJT combo circuit is connected to the output of my "Recovery Tube" from the initial circuit, after R16, would I still need a coupling cap? Assuming you remove R11 to replace it with R1 from the FET/BJT circuit.

I tried a JFET with lower IDSS and that biases much nicer.

Even though the input voltage is a perfect 1v ac sine wave in the simulation?

For completeness you can see the original 1v input run +6 to +12v after the JFET stage which is buffered by the BJT

Hmm, now the whole thing just acts as a buffer. Without -12v on the emitter of Q1 there is zero voltage on the output. At least before I was getting a gain of ~3 which is what I had wanted in the first place. Thanks, I think I will just scrap the first JFET buffer, it doesn't seem necessary...