What is the piezoelectric effect in a crystal oscillator?

Crystal oscillators operate on the principle of inverse piezoelectric effect in which an alternating voltage applied across the crystal surfaces causes it to vibrate at its natural frequency. It is these vibrations which eventually get converted into oscillations.

When frequency of oscillation of a crystal oscillator become parallel resonance frequency reactance of crystal oscillator becomes?

Solution: When resonance frequency of oscillator becomes parallel resonance frequency the impedance of the oscillator becomes infinity. Solution: When the frequency of oscillation of crystal becomes less than that of wS the oscillator becomes capacitive and in between wS and wP it becomes inductive.

When crystal is not vibrating it is equivalent to?

capacitance Cm
The above equivalent circuit consists of a series R-L-C circuit in parallel with a capacitance Cm. When the crystal mounted across the AC source is not vibrating, it is equivalent to the capacitance Cm. When the crystal vibrates, it acts like a tuned R-L-C circuit.

What is the piezoelectric effect in a crystal Mcq?

Piezoelectric Effect: It is the ability of certain materials to generate an electric charge (response) in response to applied mechanical stress.

What are the advantages of crystal oscillator over other oscillator?

It has Automatic amplitude control. It has very high frequency stability. The crystal oscillator is possible to obtain very high precise and stable frequency of oscillators. It has High frequency of operation.

What is the relationship between the series and parallel resonant frequencies of a quartz crystal?

What is the relationship between the series and parallel resonant frequencies of a quartz crystal? They are equal. Parallel resonant frequency is approximately 1 kHz higher than series resonant frequency. Series resonant frequency is approximately 1 kHz higher than parallel resonant frequency.

Why capacitors are used with crystal oscillator?

The capacitors are there to resonate with the crystal inductance and cause the crystal to oscillate on its fundamental parallel-resonant mode. The capacitors are there to resonate with the crystal inductance and cause the crystal to oscillate on its fundamental parallel-resonant mode.

Do crystals have frequencies?

Crystals also carry the power to induce a placebo effect in the body, which is scientifically proven to help medical treatment. These healing rocks and crystals have their particular vibration and frequency, which arise from their molecular composition.