Explain crystal oscillator, Electrical Engineering

Assignment Help:

Q. Explain Crystal Oscillator

The frequency of a crystal-controlled oscillator is held constant to a high degree of accuracy by the use of a quartz crystal. The frequency depends almost entirely on the dimensions of the crystal (essentially its thickness); other circuit values have comparatively negligible effect. However, the power obtainable is limited by the heat the crystal will stand without fracturing. The amount of heating is dependent upon the r.f. crystal current which, in turn, is a function of the amount of feedback required to provide proper excitation. Crystal heating short of the danger point results in frequency drift to an extent depending upon the way the crystal is cut. Excitation should always be adjusted to the minimum necessary for proper operation.


Related Discussions:- Explain crystal oscillator

Show advantage of digital control system over analog system, Q. Show Advant...

Q. Show Advantage of digital control system over analog system? Sampled data and digital control offer several advantages over analog systems: • More compact and lightweight

Explain current-to-voltage amplifier, Q. Explain Current-to-Voltage Amplifi...

Q. Explain Current-to-Voltage Amplifier? The basic circuit is shown in Figure, which is similar to that of an inverting amplifier. The - input is connected directly to a curren

Packet switching over circuit switching, Q. Justify disadvantages and advan...

Q. Justify disadvantages and advantages of packet switching over circuit switching? Ans: Comparison of circuit switching and packet switching showing disadvantages and advan

How address and data lines are demultiplexed in 8085, How address and data ...

How address and data lines are demultiplexed in 8085? AD0-AD7 lines are multiplexed and the lower half of address A0-A7 is available only during T1  of the machine cycle. This

Principals applied in product design, What are the broad principals that wi...

What are the broad principals that will be applied in product design to facilitate automated assembly ?

Extended industry standard architecture, How is EISA bus different from ISA...

How is EISA bus different from ISA bus? The Extended Industry Standard Architecture (EISA): it is a 32 bit modification to the ISA bus. Since computers became larger and had wi

What are the features used mode 2 in 8255, What are the features used mode ...

What are the features used mode 2 in 8255? The single 8-bit port in-group A is available. 1. The 8-bit port is bi-directional and additionally a 5-bit control port is availa

Find the flux density in the air gap of the right leg, Q. In the magnetic c...

Q. In the magnetic circuit shown in Figure the center leg has the same cross-sectional area as each of the outer legs. The coil has 400 turns. The permeability of iron may

What is centralized spc, Q. What is centralized SPC? In centralized con...

Q. What is centralized SPC? In centralized control, all control equipment is replaced by a single processor which should be quite powerful. It should be capable of processing 1

Draw the equivalent magnetic circuit diagram, 1) Consider the magnetic circ...

1) Consider the magnetic circuit shown in the figure. Steady currents flow in the windings of N 1 and N 2 turns on the outside legs of the ferromagnetic core. The core has a

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd