Asked by Andy Blackwell Uncategorized
What are the other names of quality factor of an oscillator?
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Asked in Consumer Electronics, Electronics Engineering, Electrical Engineering, Waves Vibrations and Oscillations
Applications of ujt other than relaxation oscillator?
Asked in Electronics Engineering, Electrical Engineering, Electrical Wiring, Waves Vibrations and Oscillations
What is the purpose of an oscillator?
Oscillator- Another important circuit like an amplifier in electronics. It is the circuit which generates alternating voltage. For this, it requires direct current ( d.c. ) power supply. Purpose of an oscillator- Sinusoidal or non sinusoidal waveform of low or high frequency can be generated by an oscillator. Applications of an oscillator- Oscillator is widely used in radio transmitter and receiver, TV transmitter and receiver, audio generator, RF generator, waveform generator, function generator, telemetering, in radio telephony as carrier, in radio telegraphy, in induction heating, in dielectric heating, in remote control, in digital clock, To produce ultrasonic waves, To produce accurate time base and many other electronic equipments.
Asked in Educators
Are males better than females at being a primary school teacher?
What is 12MHZ crystal oscillator?
An oscillator is something that produces an output that repeats regularly. In the electronics field this will be an electrical waveform, often but not always a sine wave. The most important property of an oscillator is its frequency : the rate at which the output repeats. This is measured in Hertz (Hz for short). One Hertz is one repetition (aka cycle) per second. One MegaHertz (MHz) is one million repetitions per second. One of the problems in designing a high quality oscillator is maintaining the output frequency at the value required. One method is to control it by a quartz crystal; this is cut so that it vibrates mechanically at the design frequency, and is coupled to the electronics by the piezo-electric effect. A 12 MHz crystal oscillator is an electronic circuit, whose output frequency is controlled by a quartz crystal to repeat 12 million times per second. (Note. Oscillators don't have to be electronic. Other examples are a guitar string, a flute or a pendulum. An electronic oscillator is the only one that can be crystal controlled.)
Asked in Shopping
What is the least important factor when comparison shopping?
The most important factor is the quality of the product you hope to buy; be sure that when you do comparison shopping you compare the product you picked with other products from different stores or companies. The least important factor depends on yourself and what you want. There is no real less important factor of comparison shopping.
Asked in Algebra
In a negative correlation as one factor is decreased the other factor?
What is the difference between local oscillator and oscillator?
Oscillator is a generic word for any circuit that produces an alternative signal. The shape of the signal, its stability and its output impedance are not considered in this case. "Local oscillator" is one specific type of oscillator used in radio receiver for the purpose of frequency conversion. the input Radio Frequency( RF ) signal is "mixed" with the local oscillator signal and the subtraction of two frequencies is obtained at the output. "Mixing" in this context means: "multiplication"\ In some other context in electronics (specially audio) mixing means "adding" the mathematical operation for local oscillator is F out=Fin - F loc.osc. The output of the mixing operation can also be Fin+F loc.Osc. But this higher frequency is usually filtered out. The local oscillator needs to be a pure sine wave with a very good frequency stability and usually very stable output voltage. Recently very good "synthesizers" are introduced in the market that permit generation "programmable local oscillation"
The function of an oscillator in a radio transmitter is to?
There are typically at least two oscillators involved in the transmission aspect of a radio transceiver: one is the transmission oscillator which creates a cosine waveform modified with the input key (the information being broadcasted), the other is the variable frequency oscillator which allows one to select the desired frequency for communication. On most transceivers the VFO also modifies the receiving end of the device simultaneously.
Asked in Computer Terminology, Electronics Engineering, Electrical Engineering, Waves Vibrations and Oscillations
Why should 1 MHz crystal Oscillator oscillates at a frequency other than 1 MHz?
Heat variances will cause the frequency to oscillate up and down in a rather dramatic way sometimes. Other possible crystal problems are manufacturing/quality-control error, aging, or vibration. Also, the oscillator circuitry can cause the frequency to vary. Crystal manufacturers specify circuit capacitance and circuit resistance values that must be used for correct operation. Incorrect circuitry can also set up unwanted overtone resonances or spurious frequencies.
Asked in Constellations
What are other names for the constellation Delphinus?
Asked in Electronics Engineering
Why we use oscillator to convert DC into AC?
An oscillator is capable to oscillate an output about a mean with certain predetermined frequency. The AC being a periodically oscillating can thus be generated using an oscillator with fixing the amplitude of the signal preferably using a multiplier (with a steady value) or an amplifier. This feature is typically helpful for eg. in control systems in drives. There are of course other ways to produce AC from DC quantities too.
Why use crystal oscillator in micro controller?
The oscillator provides the basic clock of a microcontroller to be able to execute the instructions in a stable, periodic way. It is often used for other peripherals too, like timer, UART, etc. as frequency base, usually divided by a clock divider for integer factors, or by PLL for rational factors. If the timing accuracy of these functions is not important, a simple RC oscillator can be used. Many microcontrollers have it internally. Accuracy is in 1...10% range. For better accuracy and temperature stability, a resonator can be used. For applications where timing is critical, a crystal can be used. Most micros have built-in oscillator, so only a crystal and two caps are needed. For those which have no built-in oscillator, external crystal oscillator module may be used. There are OCXO and TCXO modules available for very high stability needs.