Oct 10, 2009 #1 M masoncao Newbie level 2 Joined Sep 11, 2009 Messages 2 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location china Activity points 1,290 hi guys can somebody explian a pure reactance is noiseless? thank u.
Oct 10, 2009 #2 V vfone Advanced Member level 6 Joined Oct 10, 2001 Messages 5,737 Helped 1,622 Reputation 3,249 Reaction score 1,254 Trophy points 1,393 Activity points 36,431 The thermal noise power in a resistor is 4kTRB. Pure reactance C or L cannot dissipate energy, and so cannot generate thermal noise.
The thermal noise power in a resistor is 4kTRB. Pure reactance C or L cannot dissipate energy, and so cannot generate thermal noise.
Oct 10, 2009 #3 B biff44 Advanced Member level 6 Joined Dec 24, 2004 Messages 5,056 Helped 1,376 Reputation 2,748 Reaction score 1,060 Trophy points 1,393 Location New England, USA Activity points 37,973 Sounds like a phantom argument. Since there is no such thing as a "pure reactance" on planet earth, why discuss it? Just assume all reactances are lossy, and as such have thermal noise.
Sounds like a phantom argument. Since there is no such thing as a "pure reactance" on planet earth, why discuss it? Just assume all reactances are lossy, and as such have thermal noise.