Draw and explain colpitts oscillator, Electrical Engineering

Assignment Help:

Q. Draw and explain Colpitts oscillator?

Colpitt's oscillator is a superb circuit which is used widely in commercial signal generations of  frequency of 100 Mhz . It consists of  a single state inverting amplifiers and an (phase shift network). The two series capacitors C1 and C2 form the potential divider for providing the feedback voltage ie. Voltage developed across the capacitor C2 provides the regenerating feedback.If you consider positive feedback is applied to compensate for the losses in the tuned circuit, the amplifier and feedback circuit create a negative resistor. When Z1 and Z2 are capacitive, the impedance across the capacitors can be estimated from a formula I won't lay on you here because it includes beta, hie, as well as XC1 and XC2. Suffice to say it can be shown that the input impedance is a negative resistor in series with C1 and C2.  And the frequency is in accordance with:

292_Draw and explain Colpitt’s oscillator.png


Related Discussions:- Draw and explain colpitts oscillator

Sampling of digital communication systems, Q. Sampling of digital communica...

Q. Sampling of digital communication systems? Sampling of an analog signal makes it discrete in time. A bandlimited signal can be recovered exactly from its samples, taken peri

Transmission and distribution, A three-phase transposed line is composed of...

A three-phase transposed line is composed of one conductor per phase with flat horizontal spacing of 11 m as shown in Figure 1(a). The conductors have a diameter of 3.625 cm and a

Working of r digital to analog converter, 2 n -R D/A CONVERTER An n-bit...

2 n -R D/A CONVERTER An n-bit 2 n -R D/A converter needs 2 n resistors of equal value R and (2 n+1 -2) analog switches. A 3-bit 2 n -R D/A converter is shown in Figure, which

Weins bridge oscillator, please give me the ckt for wein bridge oscillator ...

please give me the ckt for wein bridge oscillator with 5KHz frequency using transister (with exact values of resistor and capacitor).

Calculate the total charge on the integrator, Q. Consider the dual-slope A/...

Q. Consider the dual-slope A/D converter of Figure. (a) Calculate the total charge on the integrator due to the input voltage Vin during the signal integration time T. (b) Ob

Electro Chemistry, Construction and working of calomel electrode

Construction and working of calomel electrode

Sommerfield’s free electron theory, Write down basic postulates of sommerfi...

Write down basic postulates of sommerfield’s free electron gas model. Show that the number of energy states per unit energy is given by g(E) = 4Rv/h 3 (2m) 3/2 E 1/2 .  What is

Define waves and transmission lines, Q. Define waves and transmission lines...

Q. Define waves and transmission lines? In basic circuit theory we neglect the effects of the finite time of transit of changes in current and voltage and the finite distances

Determine vc in given circuit, Q. Consider the circuit of Figure in which t...

Q. Consider the circuit of Figure in which the switch S has been open for a long time and is closed at t = 0. Determine v C (t) for t ≥ 0.

Compare mosfet with jeft, Compare MOSFET with JEFT ? a. In enhancement ...

Compare MOSFET with JEFT ? a. In enhancement and depletion types of MOSFET, the transverse electric field induced across an insulating layer deposited on the semiconductor mate

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