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For a helical antenna, the half-power beamwidth and directive gain are given by where C = πD, N = L/S, and S = C tan α,in which α is called the pitch angle, and The
Q. Explain Power semiconductor-controlled drives? Power electronics deals with the applications of solid-state electronics for the control and conversion of electric power. Con
how does a zener diode works.
Q. An n-channel JFET is given to have V P = 3V and I DSS = 6 mA. (a) Find the smallest value of v DS when v GS =-2 V if the operation is to be in the active region. (b) D
Q. What are the different parameters of jfet ? A bipolar junction transistor (BJT) is a current controlled device that is output characteristics of the device are controlled by
disadvantages of shunt&series clippers
Q. How oscillations start up in an oscillator? The noise voltage produced due to the random motion of electrons in resistors or in active devices provides the starting voltage
Q. Explain Working of Liquid-crystal display? This display needs only microwatts of power (over a thousand times less than a LED) and is used in such devices as electronic wris
One of the simplest circuits is the asynchronous or ' ripple' counter. Below is shown the circuit diagram of a simple 3 stage ripple counter. The operation of this circuit
Q. Draw and explain diode clipping circuit ? A diode clipping circuit can be used to limit the voltage swing of a signal. Clipper circuits are used to clip a portion of the w
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