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  1. VenomBallistics

    Can this be repaired by a complete novice please? Basic circuit repair?

    Yes I know that part ... Never found one for sale, but then, I never looked that hard. It a 4 pin IC specifically for these solar LED things
  2. VenomBallistics

    Now the Fun Begins

    I have a trainwreck clone and a Laney AOR. Few Boss offerings like the od3 mt2 a chorus, and a delay. A random smattering of other things. Honestly, I use very little if any drive from any of my distortions. Mainly, I use them as boosters and or extra tone control. I really just let the amp be...
  3. VenomBallistics

    Now the Fun Begins

    I don't believe that to be a limiting factor to be honest. Much the same as your use of a 4558, where a TL072 is holy writ, you may swap out parts. You can hit DigiKey and use it's parametric parts search against specs of the parts called for, and have a list of suitable substitutes. Funny...
  4. VenomBallistics

    Akura Retro Phono n BT Player AITVS550 BTRB

    Long ago in a different, now defunct forum, a guy with the handle "Tekwiz" put me onto manufacturer sample parts. Nice option for things like this, because you get parts of provenance for free. I found LT's policy "Analog Devices offers a limited amount of free samples to qualified customers in...
  5. VenomBallistics

    Akura Retro Phono n BT Player AITVS550 BTRB

    after looking up a few of the other part numbers, I'll go with "dredged from the murky bed of the Yangtze river" brand. just looked at Linear Technologies LTC4054's. about a buck and a half each USD. but they also seem to have a sample option for one of them. Not sure how generous their sample...
  6. VenomBallistics

    Akura Retro Phono n BT Player AITVS550 BTRB

    Interesting. Obviously the 4054 ain't cutt'n the mustard if both did a silicon to carbon conversion. Thus, I wonder if there isn't a pin for pin equivalent of higher quality
  7. VenomBallistics

    Now the Fun Begins

    Don't be so easily dissuaded. It's kinda a cool circuit, even if it's old and AG would like to play games with me again ... You have two BC 547s arranged in a Darlington pair. One feeds into the other to create a very sensitive input stage. When this gets tickled it will exceed the threshold of...
  8. VenomBallistics

    Now the Fun Begins

    Never used said software, but I'll spitball at the circles being some kind of setpoint for the software
  9. VenomBallistics

    Now the Fun Begins

    Looks like a power transistor of some flavor. It's function is to switch current to the siren once triggered by the high gain Darlington pair monitoring the piezo transducer
  10. VenomBallistics

    Now the Fun Begins

    Perhaps the examples shown were to illustrate clipping diode strategies to augment pre established knowledge.
  11. VenomBallistics

    class A push - pull amplifier ?

    Is it for a Spice simulator run like you said? Then there's no need to wind any transformers at all If class doesn't matter, neither do our answers
  12. VenomBallistics

    Now the Fun Begins

    Elliott sound ... That's a blast from the past. Save that link for sure. ESP was always good for a fresh take on concepts in a world of regurgitation.
  13. VenomBallistics

    Now the Fun Begins

    Yes, I've seen this. Some are quite marked. It's kinda worth it to cannibalize some Christmas tree strings. For indicator LEDs if nothing else. But I think I might know what he's running into. While different and audibly so, it's not so far removed that one holds significant value over the...
  14. VenomBallistics

    class A push - pull amplifier ?

    Class A push pull is mid biased ... as one transistor swings toward saturation, the other swings toward cutoff. Class B is by nature, push pull as they are biased exactly at cutoff as one transistor swings toward saturation, the other simply remains in off state while waiting it's turn. Class...
  15. VenomBallistics

    Now the Fun Begins

    Yup, you're learning. these are the primary three takeaways of diode clipping where real differences are heard the change from small signal diodes to LED is significant, as is the symmetrical and asymmetrical architectures. I've found a good bit more mileage out of the bypass capacitors to be...
  16. VenomBallistics

    class A push - pull amplifier ?

    I've built class A push pull amps, even without heat sinks. But they were tube fired. Do you men Class AB? If so, these are not a true class A in that they are not biased to midpoint, but rather, just inside the range of conductance. They are really just class B with a dirty shortcut at the bias...
  17. VenomBallistics

    Now the Fun Begins

    As I was reading the supplied material, the creator made mention of something I observed way back. He had a preference for the use of LEDs over small signal diodes due to the higher clipping voltages. In my own experience, different colors of LEDs also had different effects. I imagine that these...
  18. VenomBallistics

    Now the Fun Begins

    yup ... gotta keep em separated. PAiA offers one, and by extension, schemmies https://paia.com/quadrafz-design/ It's a beast, but I imagine one could scale it down to something pedalboard friendly and still pony up the goods
  19. VenomBallistics

    Now the Fun Begins

    we'd add an op amp to mix things down before the volume pot, and they wouldn't necessarily share the tone control either as the goal is to abuse different frequency ranges with varying levels and methods of sadism. High freqs like hot wax, while lows respond better to a good old fashioned flogging
  20. VenomBallistics

    Akura Retro Phono n BT Player AITVS550 BTRB

    I think you could try looking up the numbers on the chips and consult the related datasheets as you find those parts
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