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What is the purpose of resonation?
Resonance describes a 'condition' rather than a 'purpose', but it is made use of in (for example) radio circuits, in order to tune the radio to a particular frequency (the resonant frequency of the signal).
Can resonance work in tone detection?
Yes, resonance can work in tone detection. You tune the resonant circuit to the frequency you want to detect and follow it with an amplitude detector. Amplitude above your design threshold value means there is signal frequency within your passband. This is how the original crystal radio worked. The resonant frequency was the frequency of the radio station desired. All other frequencies (radio stations) were rejected by the bandpass filter.
What is the purpose of resonance circuit?
Resonance describes a 'condition' rather than a 'purpose', but it is made use of in (for example) radio circuits, in order to tune the radio to a particular frequency (the resonant frequency of the signal).
How do radios separate radio waves?
The section of the radio that's responsible for 'listening' to only one frequency at a time and rejecting any others may be thought of as the radio's "tuner". It uses resonant circuits to select one frequency and reject the others.
What is the device called that can convert DC into AC radio frequency something Arc?
An "electric arc" may generate radio frequency noise. There are many devices, having various purposes, which generate RF. Jacobs Ladder, arc welder, Tesla Coil, radio transmitter, microwave oven... Some generate RF for a specific purpose, others generate RF as a by-product.
What device has a frequency?
Frequency means 'how many times an event happens in a period of time'. Most things have a resonant frequency. This is that they will vibrate, or wobble, in a reular pattern, when stimulated by an external force. The frequency of natural resonance will depend on the material and size of the object. The frequency of electromagnetic fields is known as radio. The infinate number of different frequencies, enables us to choose one signal over another, by use of resonant circuits and filters. The resonant frequency of taught strings and columns of air, gives us musical instruments. The regular movement of changes in air pressure, enables us to percieve sound at different frequencies. So, just about everything has a 'Frequency'
What is the frequency range for radio wave?
We generate and detect radio waves for purposes of communication, cooking, andscientific investigation, in the frequency range of roughly 30 KHz to 300 GHz,corresponding to wavelengths between 10,000 meters and 1 millimeter.
What is a local oscillation?
A local oscillator is used in a superheterodyne radio circuit for example.The incoming radio frequency is mixed with an internal local oscillator circuit to generate a new intermediate frequency (IF) .The local oscillator usually runs at a frequency of 470kHz and is generated by an inductor and capacitor(LC oscillator)
What is local oscilator?
A local oscillator is used in a superheterodyne radio circuit for example.The incoming radio frequency is mixed with an internal local oscillator circuit to generate a new intermediate frequency (IF) .The local oscillator usually runs at a frequency of 470kHz and is generated by an inductor and capacitor(LC oscillator)
Are microwaves a type of radio wave?
Yes, microwaves are a type of electromagnetic wave, similar to radio waves but with a higher frequency and shorter wavelength. They are used in microwave ovens to heat food by exciting water molecules, causing them to vibrate and generate heat.
What is the function of magnetron?
A magnetron is a type of vaccum tube with an electron emissive filament and a carefully machined pattern used as a resonating cavity & fitted in a strong permanent magnetic field, used to generate microwaves of high powers. When this type of tube is activated using the appropriate operating voltages, the electron flow in the vicintiy of the resonating cavity & the magnetic filed generates a strong electromagnetic frequency field depending on the characteristics of the resonant cavity. A small take off electrode picks up the resonant energy from the cavity and feeds it into a waveguide which is then coupled to the external application as required. Magnetrons are used in radars & microwave cooking ovens.
Does a magnetron give off radio waves?
A magnetron may be used to generate radio-frequency currents and fields at high power and high frequencies. The source of RF in most microwave ovens is a magnetron.
