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  1. SparkyCal

    I'm Back- sort of

    AudioGuru- thanks. I thought so. Just wanted to make sure I wasn't losing my mind. Bertus- I think the docs you sent me are worth reading and I plan to. Sometimes, I think I put too much reliance on Youtube videos- after all, anyone can make a video about anything; doesn't mean they are...
  2. SparkyCal

    I'm Back- sort of

    I am refreshing my knowledge as I go. I just finished watching four YouTube videos on op amps. One of them talked about having two separate power supplies, to make the op amp work. This is the video that confused me. You don’t need two power supplies for what I am going right? Isn’t that taken...
  3. SparkyCal

    I'm Back- sort of

    Thanks.
  4. SparkyCal

    I'm Back- sort of

    I recall vaguely something about when using a dual op amp , you had to do something to buffer the second op amp not being used. Is that true
  5. SparkyCal

    I'm Back- sort of

    That’s possible but unlikely. I have a ton of the 488ds that I bought via Amazon. The op amp I bought for this circuit came in a 4 pack from my local electronics store prior to Covid hitting. It is a big and reputable store. I also used a socket and tried more that one. I think the issue in...
  6. SparkyCal

    I'm Back- sort of

    With 9 volts running to it, but no input signal After R33. 4.47 V Just after pin 6 and before the 1uF capacitor. 4.06 volts I realize that the output has to go to a guitar amp.
  7. SparkyCal

    I'm Back- sort of

    Maybe I will ask it thus way (with reference to Audiogurus' diagram here : https://www.electronicspoint.com/forums/threads/im-back-sort-of.295105/page-2) So, with reference to that, I think this is what I should be doing: The Tone pot. Its input prong (left prong) , would go to the 270R...
  8. SparkyCal

    I'm Back- sort of

    The good news and the bad news. The good news is that I am no longer plagued by the problems I had in the early days. My build on the PCB board went quite well and my multi meter seems to indicate that I am getting the proper reading at the pins. You may call that for the life of me, in the old...
  9. SparkyCal

    I'm Back- sort of

    Thanks again to all. I won’t have a chance to get back to this till later today. But this time around, before I correct things, I am going to force myself to re read each post here, and ensure I understand why things work the way they do. Stayed tuned.,.
  10. SparkyCal

    I'm Back- sort of

    Audioguru. Thanks. I will get back to this tomorrow afternoon and report back.
  11. SparkyCal

    I'm Back- sort of

    Sorry. I don't use Windows. I'm on a Mac. But this diagram should illustrate where I am at. This is my current wiring . The pots shown are not the actual pots, so ignore their values. They are just there as a proper to show the prongs and where they are wired to presently
  12. SparkyCal

    I'm Back- sort of

    I think I'm confused. Here is how I did it, after changing it around a few times, after having read the various explanations. O | | | L M R Above is a diagram of an Ariel view of the potentiometer, and it's prongs L = Left prong. M =- Middle prong R = right prong 10 K...
  13. SparkyCal

    I'm Back- sort of

    Perfect guys. Thanks!!!!
  14. SparkyCal

    I'm Back- sort of

    Ok..this question is simply based on my being out of touch with this stuff, and my b=-needing to brush up. The circuit now calls for a 100K pentetiomter (right after the 270R) resistor. The potentieimter has three prongs (Left , Middle and Right). I am confused as to which one goes where...
  15. SparkyCal

    I'm Back- sort of

    Thanks Audioguru and Harald...nice to hear from you both. I know the fuzz sound was really big in the Hendrix days, and is still used today. I have used that particular sound in the past, but sparingly. Thanks for explaining the electronics behind it in terms of the waveform shapes and...
  16. SparkyCal

    I'm Back- sort of

    I think I'm going to re-do this one, just to get back into it. You will recognize this because you folks helped me understand it, and you made notes to it.
  17. SparkyCal

    I'm Back- sort of

    Hi Audioguru. well, this remind me of old times (in a good way ;-)). I recall you had discerning tastes on what distortion should sound like. For the record, the distortion I use professionally, is a Fulton OCD- it's used by many of the greats; the Eagles being one example. I'm trying to get...
  18. SparkyCal

    I'm Back- sort of

    Perhaps already the first major snag. I don't have a TDA2030. I thought it was simply an op amp. I have several different types of op amps, from the days when I was here working on this stuff. I thought I would simply use one of the op amps I have, understanding that I would have to map the...
  19. SparkyCal

    I'm Back- sort of

    Just started breadboarding and already I have a question (I'm rusty ;-)) In the attached picture, you will see that I drew a dotted line around a component of the circuit ( the input jack of the pedal). Does that dotted area refer to the sleeve or the tip of the jack? I think it is the sleeve...
  20. SparkyCal

    I'm Back- sort of

    Hi Bertus. I have seen that schematic in the past. I consider it the gold star of such schematics in that it provides for complete flexibility and the toggling of configurations. In many ways, it is far beyond my capabilities, including he fact that I would need all kinds of different diodes...
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