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06-07-2023, 12:09 PM
Hi Champ81
In a previous post I demonstrated that none of the safety resistors or range resistors need to be high-wattage, and in fact can be 1/4W or less.
Usually, if you are building many things and/or servicing amps, you have an inventory of the most common values required, which for resistors will typically be half-watt ratings. This covers use in many circuit positions, although your experience may be that you use certain values only as, say cathode resistors in gain stages, or as plate resistors. The Rk's could be lower-wattage while Ra-s might be 1/2W or higher. This will also depend on the supply voltages you use or encounter.
You will see published projects where a person uses all-1W resistors, for example, purely as an aesthetic, or to ensure longer leads for hand wiring. This is usually of no electrical benefit as most power resistors have worse thermal noise and drift than smaller ones do. of course, in the parts selection process, you can filter for whatever performance you deem acceptable.
In a previous post I demonstrated that none of the safety resistors or range resistors need to be high-wattage, and in fact can be 1/4W or less.
Usually, if you are building many things and/or servicing amps, you have an inventory of the most common values required, which for resistors will typically be half-watt ratings. This covers use in many circuit positions, although your experience may be that you use certain values only as, say cathode resistors in gain stages, or as plate resistors. The Rk's could be lower-wattage while Ra-s might be 1/2W or higher. This will also depend on the supply voltages you use or encounter.
You will see published projects where a person uses all-1W resistors, for example, purely as an aesthetic, or to ensure longer leads for hand wiring. This is usually of no electrical benefit as most power resistors have worse thermal noise and drift than smaller ones do. of course, in the parts selection process, you can filter for whatever performance you deem acceptable.
