Oscillators that use an LC feedback circuit use an inductor and ?capacitor feedback to oscillate the output.? These oscillators use a ?tuned tank circuit on the collector side of the a
Oscillators that use an LC feedback circuit use an inductor and capacitor feedback to oscillate the output. These oscillators use a tuned tank circuit on the collector side of the amplifier. The inductor of the tank circuit is electromagnetically coupled with another inductor (like a transformer) which is across the base and emitter. A change in current flow on the tank circuit induces an electromagnetic field in the base-emitter inductor which makes the two current flows to be 180 degrees out of phase with each other. This causes an sinusoidal Oscillation on the output. This type of oscillator mainly used for Radio Frequency (RF) applications that require a high frequency sine wave.
(Storr, 2022)
The FAA encourages its flyers to turn off devices during take-off and landing due to the possible interference with navigation, radar, ground communication, and collision avoidance systems. Although most phones are not capable of emitting strong enough RF waves to interfere, devices like Ipods, Laptops, and handheld gaming consoles can emit strong enough RF waves to interfere with these systems, especially in confined spaces. In this case, if these RF waves were to make its way to these sensitive devices, it is more than capable of causing false reads and possible act as a jammer in a sense which definitely would not be good for anyone on the plane if this were to happen at these critical moments.
References
Storr, W. (2022, August 4). LC oscillator tutorial and tuned LC OSCILLATOR BASICS. Basic Electronics Tutorials. Retrieved March 22, 2023, from https://www.electronics-tutorials.ws/oscillator/oscillators.html
Trainer, P. (2020, March 25). Why do you need to turn off electric devices before taking off? Skyscanner US. Retrieved March 22, 2023, from https://www.skyscanner.com/tips-and-inspiration/turn-off-devices-before-take-off
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