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

Draw a schematic diagram of transformer connections, Q. Three single-phase,...

Q. Three single-phase, 10-kVA, 2400/120-V, 60- Hz transformers are connected to form a three- phase, 4160/208-V transformer bank. Each of the single-phase transformers has an equiv

Amplifiers with feedback, Q. Amplifiers with Feedback? Almost all pract...

Q. Amplifiers with Feedback? Almost all practical amplifier circuits include some form of negative feedback. The advantages gained with feedback may include the following: •

Adi add immediate instruction , ADI Add Immediate  Instruction The  b...

ADI Add Immediate  Instruction The  bit  data specified in the instruction  is  directly  added with  contents of accumulator and result  of operation is stored  in the  accum

State the drawbacks of in band and out band voice signalling, a. Enlist the...

a. Enlist the benefits and drawbacks of in band and out band voice signalling? b. Describe Channel Associated mode, Channel Non-Associated mode and QuasiAssociated mode of commo

Show binary coded decimal number system, Q. Show Binary Coded Decimal Numbe...

Q. Show Binary Coded Decimal Number System? If we analysis single digit values for hex, the numbers 0 - F, they represent the values 0 - 15 in decimal, and occupy a nibble. Fre

Motor: power production, The mechanical power produced at the armature of a...

The mechanical power produced at the armature of a motor is: P = T a . (power is in watts if torque is N.m and    in rad/sec). Some of this will be lost due to friction and

List the addressing modes supported by 8051, List the addressing modes supp...

List the addressing modes supported by 8051. 1. Register addressing  2. Direct  addressing 3. Register indirect addressing 4. Immediate addressing 5.Register addres

Define sampling at a very high frequency, Define Sampling at a Very High Fr...

Define Sampling at a Very High Frequency? By sampling at a very high frequency compared with the signal frequency, we can ensure that we do not miss important information. Anot

What is threaded system, What is Threaded system. Threaded system: At...

What is Threaded system. Threaded system: At times we require implementing an operating system which can process multiple threads. Many threads are handled through the kernel

Digital Electronics, Design a MOD-6 synchronous counter using T Flip-Flops....

Design a MOD-6 synchronous counter using T Flip-Flops.

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