Electronics

Enhancement Type MOSFETs  In this type of MOSFET, channel is formed after applying biasing hence it is named as enhancement type. This MOSFET is smaller in size, economical and provides better performance than depletion MOSFET. Figures 1(a) and (b) depict the cross-sectional view and circuit symbols of n-channel enhancement type MOSFET, respectively. The broken line […]

MOSFET stands for metal oxide semiconductor field effect transistor. It is also called IGFET or insulated gate field effect transistor. It is an integrated circuit (IC) or a semiconductor chip. It is fabricated by VSLI using planar technology. The thickness of SiO2 layer is 1000 to 2000 Ao. The larger input resistance of the MOSFET

This article covers the following items about electrical timers:  The five sections of timers  Nine timer operating principles  Five common modes of timer operations  Timer charts  Sections of Electrical Timer Figure 1 provides a block diagram that shows the five functional sections of a timer. Timers can be divided into the following sections:  Power or

When a high reverse-biased voltage applied to a diode may create a high reverse current, which can generate excessive heat and cause a diode to break down. The applied reverse voltage at which the breakdown occurs is called the breakdown voltage, or peak reverse voltage. A special diode called a zener diode is connected to

There are two types of extrinsic semiconductors. These are n-type and p-type. In n-type, the electrons are majority charge carriers while holes are minority charge carriers. In p-type, the holes are majority charge carriers and electrons are minority charge carriers. When these two types of materials namely n-type and p-type are chemically combined with a special

A resonance circuit consists of a capacitor and an inductor. It also has some resistance. Either this resistance may be the effective resistance of the coil itself or connected externally to create some desired effect.   A resonance RLC series circuit is shown in Figure. Here, a capacitor C and an inductor L are connected

Hi friends, In this article, I am discussing the radar working principle, block diagram and applications. So keep reading. A radar which stands for “radio detection and ranging” is a method of detecting the presence and position of objects by reflected radio waves. The detected object is called target and the distance to the target is determined

Hi friends, In this article, I am providing you some basic information about the industrial applications of ultrasonic waves. So keep reading. The term ultrasonic is used in acoustics to denote the frequencies which are beyond the range of human hearing. Thus; ultrasonic waves are sound waves of frequencies above 20,000 c/s. By using modern methods of generation,

There is a large number of ratings associated with thyristors. These ratings are in terms of voltage, current, power, temperature and derivatives of voltage and current and time to switch on and off. In practice, it may not be necessary to give consideration to each and every rating to make choice of a thyristor. Thyristor

A transistor can also act as a switch and can turn ON and OFF power in an electrical load. The action of the transistor, while using a transistor as a switch is explained below: Switching Action of a Transistor To understand the switching action of a transistor in detail, consider the collector characteristics for a