I've read documents that really say 'use a comparator if you want a comparator' but also heard other experts say, there's no reason one shouldn't use an op amp as a comparator.within a general audio or at least within a specific circuit context. In some cases, such as op amps used as a comparator, you might find a 4558 does fine or better - I've heard some say LM358s work well compared to other op amps, when configured like a comparator. The TLC2272 op amps are likely used predominantly in cases where their ability to swing rail to rail helps ofset the single sided 9v of this design as compared to previous version that were powered with +/- rails. Of course, there are points in the schematic where component configurations are different due to the difference in voltage.but sometimes it's the same, just a different value.sometimes it's even the same value. Lots of breadboards had breaks in continuity along what might otherwise seem like continuous power rails.I always say beep it out, and even still I got caught the other day assuming that with a new breadboard that LOOKED like the 'twin industries' type I am the most fan of, but it was cheaper.and good, but had breaks in the power rails. One thing you can do in some areas, if things are on the breadboard, is refer to the arrangement of components on the earlier versions, for reference.there may be errors in the schematic, a personal error you made in duplicating it on the breadboard, a wrong assumption about how the breadboard is configured.
I don't know that I'd trust the schematic. Hope that is more information than you asked for. OF course in The Art OF Electronics, it explicity says that any circuit that is dependent upon a specific component types characteristics is a symptom of 'bad design.' Think Germanium fuzz face in the modern world (back then maybe it wasn't) =^)
Read some, be inquisitive of pare one to another.look at how good designs utilize them in circuits or where detailed schematics suggest a number of diode/transistor types will work equally well, and try to understand why. Gnerally to anyone.you can learn a lot of datasheets. Which is why you may see it called for in a pedal for power supply stuff from time to time.50v is plenty and some may like it's other specs better for power supply areas or the like. Most pedals are low voltage and I think the 1N4001 has the lowest voltage tolerance - at 50V. You'll probably see that its a datasheet for 1N4001-1N4007 diodes, with minor differences between variants ending in 1-7 other than max voltage. Again though, look at the datasheet for a 1N4001. They're 'over design' for audio portions of most circuit, kind of oversized, clunky, etc on vero and perf.
However, it's education to look at the datsheets for the two types of diodes, from the same manufacturer ( is a great source for such datasheets), and examine the difference, or see if they put the two on the same datasheet, even!ġN4001/1N400X type diodes are different. Pedal effects rarely qualify as even one of those.
They're not for ultra high voltage, ultra high current, or ultra high speed applications. Those two diode types are more or less 'generic' silicon types. I have a strange sense of humor, but I found that funny. I think some diodes I got the other day actually were labeled 1n9148. Generally in low voltage electronics, 1n914 and 1n4148 are the same.
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