First, assume a spherical resistor in a vacuum, that can also dissipate heat with 100% efficiency.
Now that we’re in physics land, anything is possible.
Comment on Virgin Physicists
frezik@midwest.social 4 weeks ago
That level of precision in a resistor would literally be thrown off if you breathed on it. If you actually needed that, then you need to build an extremely controlled environment around it. Even then, the heat from the electricity itself would throw it off. Maybe in a liquid nitrogen bath?
Zron@lemmy.world 3 weeks ago
MehBlah@lemmy.world 3 weeks ago
Only if it isn’t applied physics.
JayDee@lemmy.sdf.org 3 weeks ago
A big aspect of good design is being able to solve an issue as succinctly as possible, with as wide an operating range as possible. Lower tolerance requirements = better.
If you need that level of precision, you might want to reconsider your career in circuit design.
piecat@lemmy.world 3 weeks ago
You can’t tell me that there isn’t a good reason that 0.001% resistors exist. Otherwise why sell them?
JayDee@lemmy.sdf.org 3 weeks ago
4 Sig figs vs 9 Sig figs is a big gap. If you need your resistors in a circuit to be precise to 9 Sig figs, seek a new career.
It is almost always possible to take a system and make it more precise by using more precise parts (just gotta make sure you know what part you are changing to improve what tolerance). You do get diminishing returns with that, but it beats inventing a new system if the tolerances you need are just alittle ways away.
MehBlah@lemmy.world 4 weeks ago
Its funny the first thing I thought of was at what temperature.