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Explain ferrites and its uses in high frequency devices.
A group of magnetic alloys show the property of magnetisation that change, with percentage of various constituent atoms in the alloy. Illustration XOFe2O3 with X= Mn, Copper, Nickel, Zink, Mg, Cd or Fe++. The alloys are termed as ferrites. Manganese ferrite is a mixture of iron oxide and manganese oxide. Ferrites are extensively used in computers and in microwave equipment. Ferrites are advantageous at high frequencies due to low eddy current losses. The ferrites crystallise in what is termed as the spinel lattice. The resistivity of ferrites is higher than the ferromagnetic metals. Ferrites are brittle and hard materials that cannot be shaped trough ordinary machining processes. Ferrites are also used in recording tapes, transducer applications and compact aerials for focussing magnets of TV picture tubes and for radio sets.
Find the minimum rate of sampling that must be used to convert the message into digital form: (a) If an audio message has a spectral extent of 3 kHz. (b) If a television sign
working principle & circuit diagram with waveform
Explain Inverse Discrete-Time Fourier Transform 1. Observe the same things among this formula and the inverse analogue Fourier transform: The (1/2π) factor The sign
Q. Determine the bits required for a D/A converter to detect 1-V change when V ref = 15 V.
I want to know basic electricity
Q. Two single-phase transformers, each rated 2400: 120-V, are to be interconnected for (a) 4800:240- V operation, and (b) 2400:120-V operation. Draw circuit diagrams and show polar
Frequency variation in simple transmitters can be reduced by adding a _______ stage.
Determine about the Wireless technology Wireless technology (WiFi) enables connection of a computer to Internet without the need for connecting cables. A router (comprising a m
If a television station operates on UHF channel 20 (band 506-512 MHz), determine the station's visual-carrier frequency.
Voltage divider bias: The voltage divider is made by using external resistors R 1 and R 2 . The voltage beyond than R 2 forward biases the emitter junction. Via prop
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