Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. With a circuit diagram explain how a transistor in common-base configuration amplify signals.
The common-base terminology is derived from the fact that the base is common to the input and output sides of the configuration. Also the base is the terminal closest to ,or at, ground potential. The input characteristics for a transistor in common base configuration can be obtained by plotting a graph with VBE as x-axis and IE as the y-coordinate at various levels of output voltage VCB. Also the output characteristics can be observed by plotting VCB along x-axis and IC along y-axis for various levels of IE.
The output or collector set of characteristics has three basic regions of interests : the active, cut-off and saturation regions. The active region is the region normally employed for linear (undistorted) amplifiers. In the active region the base-emitter junction is forward biased, while the collector-base junction is reverse-biased.
The signal to be amplified Vs is applied to the input leads, ie. between the emitter and the base. The electrons leaving the base take two paths. A small percentage combines with the holes in the base region and constitute the base current, while the majority of these diffuse towards the collector junction. The collector junction is reverse biased and these electrons can easily cross the junction and form the collector current. This collector current is allowed to pass through a high resistor connected in series with the collector. The voltage developed across the load resistor is the amplified output voltage.
The amount of collector current depend upon the recombination at the base, the smaller the recombination the larger the collector current. A small base current controls large collector current. If the base-emitter voltage is increased slightly, more electrons are injected into the base region, which will be more than the base can use (recombination). This results in a larger collector current. In short, a smallchange in the base voltage cause very large change in the collector current. This is current amplification. The large collector current passing through the load resistor produces high voltage across which will be several times greater than the small input voltage applied to the input.
Software/Application Platform Requirement: GIS solutions would primarily consist of Database and Applications software. The application package should work in LAN/WAN/Interne
1. A 230/1000V 50 Hz, single phase transformer has the following test data: Open circuit test (L.V.) Primary voltage = 230V Primary current = 1.30 A Input power
Explain 8259 Pin Diagram. The 8259A adds 8 vectored priority encoded interrupts to the microprocessor. It can be expanded to 64 interrupt requests by using one master 8259A and
Explain cascading of multiple PICS 8259. The 8259A adds 8 vectored priority encoded interrupts to the microprocessor. It can be expanded to 64 interrupt requests by using one
Hardware Requirement- Server of adequate sizing for enterprise-wide deployment for storing maps and geospatial data. Application server and web server. Desktops
Q. Discuss the operation of a transistorized phase shift oscillator with the help of a diagram? Explain the phase shifting circuit? An oscillator is a circuit which converts el
(a) What is understand by clipping circuit. Draw and illustrate different types of diode clipping circuits? (b) With the help of circuit diagram describe the working of centre t
Out of a long-term record of precipitation for four adjacent stations you find that records of one station (station D) are missing for the spring months, September, October, and No
A collection of devices connected by Bluetooth technology in an ad hoc fashion.
Q. Draw and explain the circuit of Wein bridge oscillator. Obtain the expressions for the (i) frequency of oscillation and (ii) condition for oscillation. Will oscillat
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd