What is Oscillator ? A device used to produce sinusoidal or non sinusoidal ( e.g. square wave ) wave forms without the application of an external input signal is known as an oscillator. In an oscillator, D.C power supply is connected to the input. Thus, the oscillator converts D.C power into A.C power of desired … Read more
Fig. 25 shows the circuit diagram of common drain jfet amplifier or source follower. The output is taken between the source and the ground. Expression for common drain jfet amplifier The equivalent circuit of fig. 25 is shown in fig. 26. Since rd and RS are in parallel, so their equivalent resistance is given by … Read more
Fig. 23 shows the circuit of a common source n-channel JFET amplifier. When the positive half cycle of applied input signal voltage vgs is superimposed on VGG, then the gate source voltage becomes less negative. As a result of this, the drain current increases. Since drain current flows through RL, so the voltage drop across … Read more
Divergence and Curl of magnetic field Divergence of Magnetic Field We know, the magnetic field produced by a current element Id L vector at a point P (x,y,z) whose distance from the current element r is given by Therefore, the magnetic field at P due to the whole current loop is given by Taking divergence … Read more
These are the basic, difference between the n-type and p-type semiconductor Sr. No. P-type Semiconductor N-type Semiconductor 1. A p-type semiconductor is formed by adding a III group element as a doping element. In an n-type semiconductor, the V group element is added as a doping element. 2. An impurity added creates a vacancy of … Read more
9 basic difference between rheostat and potentiometer Sr. No. Potentiometer Rheostat 1. A potentiometer is an instrument or component in electronics that is used to compare or measure the potential difference. A rheostat is known as a variable resistor and is used to control current or vary the resistance of a circuit. 2. A … Read more
An air conditioner Capacitor fails is a major problem in the summer season. Before fixing this problem we need to know about “what does a capacitor do in an air conditioner” In terms of AC breakdowns, one of the major common causes is a faulty AC capacitor. Capacitors are an important part of each air … Read more
Voltmeter measure the difference in the electrical potential between two places, such as two points within a circuit. A voltmeter is two terminals device, one connected to wires another to leads. When we place the one tip of lead at one of the points to be tested and the other tip at the other point … Read more
Linear accelerators overcome the problem of maximum potential difference that can be held by the charged shell by the repeated acceleration of Ions through small potential difference. In this article, we are covering Linear Accelerator Construction and Working. What is a Linear Accelerator Linear accelerator is a device that accelerates particles in a straight line … Read more
Construction of JFET N channel JFET consists of (i) N-type semiconductor bar which forms the channel and (ii) two heavily doped p-type regions formed by diffusion or alloying on two sides of the n-type bar. n channel JFET shown in the figure. In the case of p channel JFET, the channel is formed by a … Read more