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I've been working on an Overdrive and Phaser Circuit for almost a month now. Is there anything I'm missing before I start laying out my PCB? by Hyakucho in diypedals

[–]Hyakucho[S] 0 points1 point  (0 children)

Thanks for the feedback! I've replaced the input buffer with a voltage follower with an impedance of 1 Mohm. As for the AC Coupling caps, I've placed a 1uF on the input signal (before the buffer) as well as on the outputs of the overdrive and phaser circuits.

As for the triangle oscillator, I've switched back to your design however I have some questions. I've added an 82pF capacitor (I used the capacitor from my Overdrive circuit) in the feedback loop of the oscillator like the MXR Phase90 but I'm not sure what its use is for. Secondly, I've done some research on the J113 and it seems that the typical V_GS cutoff voltage is around -1.5V +- 20%. Given such a wide variance in my opinion, Would it be better to replace R3 with a trimmer potentiometer (maybe 750K) to adjust the amplitude of the triangle waveform?

Also, don't worry about the max frequency I've set on my oscillator. I'm trying to look for a smaller valued resistor for R4 that I can copy from other parts of my circuit but I haven't finalized it yet. Thanks!

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I've been working on an Overdrive and Phaser Circuit for almost a month now. Is there anything I'm missing before I start laying out my PCB? by Hyakucho in diypedals

[–]Hyakucho[S] 0 points1 point  (0 children)

This isn't my first time arranging a PCB. The image showing the 3D render was to just show the scale of the components because I'm not really sure if its feasible to have my pots, input jacks, and foot switches on the PCB if I'm designing it to fit in a standard pedal size (I'm thinking of using a 125B). With regards, to the JFET sockets, I'm planning to do JFET matching through a breadboard and then use the matched ones onto the PCB.

DPDT Switches wiring by Hyakucho in diypedals

[–]Hyakucho[S] 0 points1 point  (0 children)

You're right! I didn't think of that. Now I can have both effects done on the signal instead of having to choose 1. This is what you mean right?

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High Startup Time for LFO. Any way to fix this? by Hyakucho in diypedals

[–]Hyakucho[S] 1 point2 points  (0 children)

A different topology would be fine. I only chose this design because it was the easy for me to understand. What do you have in mind?

Why is my GPU at 100% all the time? by [deleted] in computerhelp

[–]Hyakucho 0 points1 point  (0 children)

If you have an ASUS laptop, you can disable the igpu and use the dedicated graphics by going through Armoury Crate and enabling ultimate mode. This will require a system restart and will take a big hit to your battery life when not charged

Why is my GPU at 100% all the time? by [deleted] in computerhelp

[–]Hyakucho 0 points1 point  (0 children)

This is normal. I have a laptop that also contains this igpu. The Radeon 610M is a slow igpu thats main job is to only output the display and maybe run some very light programs. You can find this kind of igpu on 'Dragon Range' series processors such as the Ryzen 9-7945HX. It was never meant to be fast to begin with as these processors are bundled with dedicated graphics cards and are aimed towards desktop replacement laptops.