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  1. thomasbe86

    CA3260

    I used the LMC6482IN for drop in replacement of the CA3260E in Ibanez mostortion, I also used the quad version of it LMC6484IN (which is half the price of the dual version for some reason) with satisfying results in other builds, I probably wouldn't hear the difference with any other drop in...
  2. thomasbe86

    Getting a PCB made from a gerber

    it looks odd to me but how does it compare to your original file? maybe their viewer is not working properly, happened to me before. sometimes they mix up layers as well
  3. thomasbe86

    Getting a PCB made from a gerber

    Was reading thru the thread and intrigued by the JLCJLCJLCJLC thingy, what is that about? 😅😅 I always chose to put manually their serial number in a crowded place where you can't really see it but that's it.
  4. thomasbe86

    Measured odd and common diodes IV curves

    if anyone has got any data to add to the plot, I'd hapilly take em :) I will start next month to measure the leakage for each as well
  5. thomasbe86

    Bass response of your opamp gain stage and why is the timmy awesome

    Taking two examples, some tend to describe the tube screamer as too "tight", and the very opposite for the mostortion which is often decribed as too "messy", the bass control of the Timmy allows to adjust the low end being clipped, adjusting that "tightness", add this to any opamp gain stage...
  6. thomasbe86

    Turn your input buffer (OPAMP) into a (frequency adjustable) boost for 3$

    Watch out, the board is only to add to an existing buffer (connecting IC pin 1 and 2 as well as the ground). you'd need to add the whole buffer circuit (4 capacitors, 8 resistors, 1 potentiometer, 1 dpdt switch and 1 8dip IC) into your guitar, including the power supply (+9v for VA and a...
  7. thomasbe86

    Turn your input buffer (OPAMP) into a (frequency adjustable) boost for 3$

    I have been adding this additional control for IC input buffers builds; Deviations of the Ibanez ST9 stage called mid boost, you get a nice frequency adjustable boost to get clipped into further stages, quite nice. Here is the AC Sweep right after the stage (measured between C3 and R4): you can...
  8. thomasbe86

    "Close Enough" Sub For Germanium Diodes

    First is to find a cheap diode with yhe same cinducting treshold, then add a small value resistor to matvh the UlI/V curve. Have a look at this graph https://drive.google.com/file/d/1bkDhEYTse7-YpS7rNzBXZqA7x2Zfj5lS/view?usp=drivesdk Or this thread to see how they all compare...
  9. thomasbe86

    Overdrives that utilize opamp clipping (no diodes)

    Hex inverters but Craig Anderton's tube sound fuzz or red Llama can be nasty
  10. thomasbe86

    In Search Of… (post the obscure parts you need help finding)

    I just contacted them at "detali at zahidprylad dot com dot ua" and they gave me a fair quote, I paid about 1$ for each. See how it compares to what you can find on ebay, giving that these KT3102E were sold out everywhere else I went for it. Supply and demand 🙃
  11. thomasbe86

    In Search Of… (post the obscure parts you need help finding)

    Yup, here it is https://zapadpribor.com/ They are located in Ukraine, it took about a month to get to Switzerland, but shipped within 24 hours
  12. thomasbe86

    In Search Of… (post the obscure parts you need help finding)

    Diode comparison Yup, close enough, you got the I/V curve of loads of diodes here
  13. thomasbe86

    In Search Of… (post the obscure parts you need help finding)

    I was actually looking for these КТ3102E I always been fond of, ran out a few years back and sellers on eBay are asking for an amount I'm not ready to pay for.. I ended up getting in touch with Yuriy from zahidprylad and he was able to find a thousands in their warehouse, just received enough...
  14. thomasbe86

    What do you all usually buy from Digikey?

    I get my PCB from JLCPCB as well, never tries the assembly service, good to hear feedback on these 🙌
  15. thomasbe86

    What do you all usually buy from Digikey?

    I always stock up on Stackpole Electronics Inc resistors, they have 1/8 watt 1% resistors that are very affordable (I think about one cent a unit) and 3.3mmx1.8mm which allows me to fit most builds in smaller enclosures. I always add Wima caps and random diodes until I reach the threshold for...
  16. thomasbe86

    This Week on the Breadboard: The Chubby Sammich

    How does it sound? got any audio to share? thought the tone stack of the FS reduced the voltage by 40dB or so, is it not too loud when hitting U2 in your configuration? oh and what is R40 for? great work, I will definitely breadboard someday soon!
  17. thomasbe86

    The Fat Sandwich

    heya, here are the AC sweeps for different settings of the potentiometers; using your tracing up here, AC sweeps, V, I and waveforms are the same when C10, C11, R8 and C15 are jumped. same for when C12, R10, D2, D3 and D5 are omitted. Very slight difference in the high end when C8 is jumped (C12...
  18. thomasbe86

    Measured odd and common diodes IV curves

    thanks! I will add these to the plot, I'm off for two weeks but will get back to it when I come home. I updated the plotly so it shows a slider like in yours, love that thing! Diodes_Avg_Plotly.html I also added a drop down for filtering for a selected type/material of diode :
  19. thomasbe86

    Measured odd and common diodes IV curves

    I figured it out, I updated the HTML and excel master file 🥳 The DB9, are they the russian D9B? Curve is super similar to D9E! Do you know the make/manufacturer of the 1N60 and 1N34A? cuz I have some in there already and trying to avoid duplicates, feel free to review and let me know what you...
  20. thomasbe86

    Measured odd and common diodes IV curves

    awesome! it will be in the master in the evening! thanks for that!
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