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Is there some kind of a "guide" on the use of resistor and capacitors in specific part/s of a circuit ? For instance, Tantalum for signal path, wirewound for cathode, etc... or copper foils in coupling, Holcos in input, etc...
I'm asking because I noticed that most high-end amps use a mix of resistors and capacitors. And not necessarily in the same price bracket.
here at Tube DIY. I also asked this question a while back to see what others were using in various applications.
For the most part, much of it is personal preferences. I have found knowing a bit about the different types of resistors will help you through the process. Don't rule out simple things such as physical size of the body of the resistor, composition depending on application and obviously the quality of any given type.
Build your system for yourself, not the critics!
Actually the circut itself is your *guide*. Some stages such as RIAA and phase splitters benefit from tighter tolerances, but that expense might be overkill elsewhere. Some locations draw higher current and require more wattage capacity, but again such capacity is overkill elsewhere. Different contruction types can be different physical sizes in the same values, so available chassis space can also determine selection, and some values are only available in certain types so the choise is made for you. BTW, Holco is a BRAND rather than a contruction type such as tantalum.
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