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. How can a JFET be used as a constant current source? Explain from the drain characteristics.
As the VDS voltage is increased from 0 to a few volts, the current will increase as determined by ohm's law and the plot of ID versus VDS will appear as shown below.
The relative straightness of the graph reveals that for the region of low voltage level referred to as VP. The depletion region will widen, causing a noticeable reduction in the channel width. The reduced path of conduction causes the resistance to increase and the curve in the graph to occur. The more horizontal the curve the more the resistance, suggesting that the resistance is approaching infinite ohms. If VDS is increased to a level where it appears that the two depletion regions will touch. A condition known as pinch off will result. The level of VDS that establishes this condition is referred to as pinch off voltage. The term pinch off is a misnomer which actually means that the value of ID has become 0 A. this is hardly the case as the ID still maintains a saturation level defined as IDSS. In reality a very narrow channel still exists, with a current of very high density. The fact that ID does not drop off to 0 at pinch-off and maintains a saturation level is verified by the fact : the absence of the drain current would remove the possibility of different potential levels through out the n channel material to establish the varying levels of reverse bias along the p-n junction. The result would be a loss of depletion region distribution that caused pinch off in the first place.
The fact about the constant current IDSS can be used to make a JFET a constant current source as its current value remain constant. The JFET is thus a very versatile device and can be used as a current source with much stabler characteristics than a zener diode current regulator.
tension and sag problems
distinguish between brittle and ductile fracture
Q. Show a block diagram of a 4-bit, parallel-input shift-right register and brie?y explain its operation.
DC Motor The motor which require dc supply to drive them are called DC motors DC motor consist two types of windings. a. Fields Winding b. Armature Winding
Q. Illustrate about Full Duplex Transmission? Full Duplex Transmission Data can travel in both directions simultaneously. There is no need to switch from transmit to receive
Given: R 1 = R 3 = 1 k_, R 2 = 100 k_ and k = 0.1 A/V, and step-up transformer turns ratio is 10. a) Find the value of the load resistor RL that would maximize the power
Energy conservation: NEP envisages a voluntary approach initially for promoting energy conservation along with emphasis on labelling of appliances. Gradually as awareness incr
Once you are happy with the biasing components you will need to disable the DC simulation component and enable the SP component. (Right click the component and then select the "com
Machine Control Instructions Instructions used to control various machine operations are kept in this group.
Commercial Losses in Electrical Systems Commercial losses are caused by pilferage, theft, defective meters, and errors in meter reading and in estimating un-metered supply of
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