![]() Or maybe a "better" opamp would be an improvement. ![]() From what I gather 741s are kinda trashy sounding by nature, but maybe that's the charm of this circuit. I have mostly duals (ie 4558) available so obviously different pinout. I'm wondering if it would be worth the trouble to try different opamps. LM741 op-amp offers many features which make its application nearly foolproof: overload protection on the input and output, no latch-up when the common-mode range is exceeded, as well as. The main function of this IC is to do mathematical operations in various circuits. Maybe it's based on something else, I don't know. LM741 IC is a DC coupled, high gain, low power voltage amplifier. I'm wondering if anybody else has messed with this circuit. LM741CN Operational Amplifier: Pinout, Datasheet, and Typical Application. I guess I could add a voltage divider before the volume pot if I want to tame the volume some on mine. I don't know how the overall volume compares to the original because that is set internally with the trimmer, and I don't want to mess with that setting since it's not my pedal. The LM741 can be operated in an open-loop configuration. I put an 18k resistor in parallel with it to make 10k, but I ended up pulling the 18k for more fuzz range. Download scientific diagram An instrumentation amplifier using LM339 IC from publication. For the fuzz control I used a 25k pot because I had it handy with wires on it already. ![]() I just copied the top part of the schematic, with a 100k pot for a volume control instead of a trimmer. So my clone works fine, and sounds pretty much like the original. Here's a not-so-great copy of the schematic:Ī slightly better. Download schematic symbols, PCB footprints, pinout & datasheets for LM741. I had an LM741 handy so I built a clone on the breadboard. A pinout diagram of the LM741 operational amplifier when in a square IC package (DIP or SOIC, as opposed to 'tin can' packages). ![]() Sounds really cool going into my Dynacomp. Quite different from a BMP or FF, more midrangey and can do overdrive pretty well. Well I agree that the fuzz is indeed pretty cool. Easy repair, just a loose wire, actually never soldered to the PCB at the factory back in 1991. He said the fuzz was cool, but had quit working. So I was fixing a Morley BFW Fuzz/Wah for a friend of mine.
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