Discussion :: Radio Receivers - Section 1 (Q.No.1)
|Giri Prasath said: (Nov 14, 2014)|
|Temperature is directly proportional to the Noise created by resistor.|
|Naveen said: (Jan 4, 2015)|
|Because it has linear characteristics if noise created it would not effect resistor value.|
|Mad said: (Feb 4, 2015)|
|As temperature increases energy of electrons increases, then random motion of electrons increases causing noise.|
|Arun Kumar said: (Dec 1, 2015)|
|Power losses is directly proportional to temperature increases.|
|Cslohumi said: (May 6, 2016)|
|Noise generated by resistors results from the motion of electrons within the resistor.
The noise power is proportional to the bandwidth.
Then, V = square root (4 kTBR).
|Prathyusha Chowdary Musunuri said: (Jul 14, 2016)|
|Noise is directly proportional to the bandwidth of a signal and absolute temperature.|
|Naresh said: (Mar 16, 2017)|
|V = square root (4 kTBR).
So, noise proportional to both R, T, B.
|Shaik Ejaz said: (May 2, 2017)|
|If the resistance is high then heat dissipation also high. High heat will effect the signal also signal strength will be decreases.|
|Bhupender said: (May 5, 2017)|
|I agree @Naresh.
Noise should depend on resistance value as well as evident from the formula. Otherwise, there will be no difference between metals and non-metals.
|Rajive said: (Apr 16, 2018)|
|Also on frequency of operation.|
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