Search results

Curious about this. I'm currently working on a preamp design and will be using a Traco Tec series converter because I've had good experience with them in a couple of Aion FX PCBs. I would have just copied the Aion FX pi filter on the input, which uses a 100uF, 10uH and 47uF. Always open to...

Doesn't Mouser ship from the US?

That will depend on the effect circuit. If it draws only 5 mA, then Ohm's law tells us there will be a 0.5V drop across the resistor. That's not too bad. If your circuit draws 50 mA, that resistor is now dropping 5V. No bueno.

Check out this thread for some inspiration: https://forum.pedalpcb.com/threads/9v-protections-for-projects-with-a-voltage-doubler-muzzle-klon.22033/ You can also go very simple and use a zener reverse biased to ground. It will shunt any voltage exceeding the zener voltage directly to ground...

If you're using the zener like above, it's not going to provide overvoltage protection for anything down the line. D1 is only there to protect the MOSFET by limiting Vgs to 9V.

Will likely become more common for German online stores at least. DHL Germany suspended shipping to the US for all commercial shipments as well as private gift shipments if they're worth over 100 USD.

TC1044SCPA is rated for 12V maximum input voltage. I would advise against running it that close to max specs continuously. Also, not all power supplies are created equal. If the external power supply isn't filtered well, that noise can get into the pedal circuit. Also, running the charge pump...

What do those 10 Ohms extra resistance across the frequency spectrum matter if all the surrounding circuitry has impedances hundreds or thousands of times higher? A 100K 1% resistor alone is going to be +/- 1000 Ohms. There's a point of diminishing returns (for audio signals at least) even if...

In your example I'm guessing PWR_GND is a separate ground pour around the charge pump to help isolate the switching noise and prevent it from coupling into the audio signal. Power ground and signal ground then likely meet only at a single point somewhere around the main filtering capacitors...

Anybody got experience with Vishay DG469 analog switches? Link to datasheet below. Just need a second set of eyes to confirm I got the switching logic right (or not). So, with the IN pin floating, the n/c pin connects to common and the n/o pin is essentially left floating. And when the IN pin is...

These are available at Tayda. It's the matte black sand finish. I don't know exactly how the effect is achieved.

Correct.

Thanks, man. It's a cool pedal and very fun to play. Interesting circuit as well with those zeners in the clipping stages. A little on the dark side but R19 or C15 can be lowered to up the presence.

Thanks for checking out the video! I designed the enclosure in Illustrator from scratch, taking heavy inspiration from the original amps (fonts, knob scale markings, etc.). UV print job was done by Tayda. I overhauled the design a while ago, here's one I recently built: I'm running the pedal...

Common to circuit ground is correct, but is there continuity between common and the ground terminal of the DC jack? If there isn't, maybe the converter references the wrong voltage which causes the offset of the +/- outputs in relation to chassis ground. A fix would be to run a wire from the...

Can you share your vero layout and wiring from/to the DC jack? Kind of peculiar that the converter output is offset by 9V.

Power transistors in general seem to be lower gain, just mind the pinout and the package size. I found some of them also have higher parasitic capacitances than regular transistors, which may or may not matter and may or may not be a good thing as it can lead to high-end roll-off due to the...

Cool idea. I'd like to check out that schematic. Currently planning to build it stock with a DC-DC converter for +/-15V, then see what I do and don't like about the circuit and go on from there. Simulations in LTSpice seem to suggest a bit of a lack in bass content, but it's hard to hear with...

I suspected as much. Some of those older Randalls look intriguing for sure, but I'm adapting the boost channel of the Marshall Valvestate 8100 with (probably) FETs for tubes. Uses TL072 and obsolete M5201 switching op amps throughout, which seem to be very similar in specs to plain old 4558s...

I'm working on pedal recreation of the preamp section of a solid state guitar amp. I want to stay true to the original and use the same or similarly spec'd op amps throughout. Due to the circuit design, I could either use two separate single op amps for the input and output sections, or use one...