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. Explain about Zener Diodes?
Most diodes are not intended to be operated in the reverse breakdown region. Diodes designed expressly to operate in the breakdown region are called zener diodes. A nearly constant voltage in the breakdown region is obtained for a large range of reverse current through the control of semiconductor processes. The principal operating region for a zener diode is the negative of that for a regular diode in terms of both voltage and current. Zener diodes are employed in circuits for establishing reference voltages and for maintaining a constant voltage for a load in regulator circuits. Figure shows the device symbol along with the linearized i-v curve and the circuit model.
As seen from the i-v characteristic, a zener diode approximates an ideal diode in the forward region. However, when the reverse bias exceeds the zener voltage VZ, the diode starts to conduct in the reverse direction and acts like a small reverse resistance RZ in series with a battery VZ. Zener diodes are available with values of VZ in the range of 2 to 200 V. The circuit model of Figure (c) incorporates two ideal diodes, Df and Dr, to reflect the forward and reverse characteristics of the zener diode. The i-v curve thus has two breakpoints, one for each ideal diode, and three straight-line segments.
I need to do this experiment. Can anyone help me out doing this
Q. Planning and Research in power system? Energy research worldwide is assuming top priority, in particular because of economic, en - vironmental, and resource constraints. DOE
3-phase 180 0 mode VSI In 1800 mode VSI each thyristor conduct for 1800 and two thyristor are fired at 600 interval. For example if thyristor T1 is fired at 00 then
a. Determine the ratio of cross section of a circular waveguide to that of a rectangular one, if each is to have similar cut off wavelength for its dominant mode. b. Compare wav
what is pole core and pole shoe in a dc machine
1. Frequency Modulation theory and its explanation 2. FM transmitter schematic, tests results and measurements 3. Amplifier and Oscillator circuit explanation and calculation
Design the Synchronous Sequential Circuit for State Diagram Illustration: - We wish to design the synchronous sequential circuit whose state diagram The kind of flip-f
For the network shown in Figure, find the current in each resistor by means of nodal analysis.
Interpoles and Compensating Windings: The most generally used method for aiding commutation is by providing the machine with inter poles, also known as commutating poles, or si
what is difference between scot and delta connection.
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: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd