What is the theory of transistor?

The Theory: A voltage or current applied to one pair of the transistor’s terminals changes the current through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power, a transistor can amplify a signal.

What is transistorized circuit?

Transistorized mechatronic circuits have replaced electromechanical devices in controlling appliances and machinery. It is often easier and cheaper to use a standard microcontroller and write a computer program to carry out a control function than to design an equivalent mechanical system to control that same function.

How does an transistor work?

A transistor consists of two PN diodes connected back to back. It has three terminals namely emitter, base and collector. The basic idea behind a transistor is that it lets you control the flow of current through one channel by varying the intensity of a much smaller current that’s flowing through a second channel.

What is transistorized voltage regulator?

The transistorized voltage regulator controls the alternator output in a similar manner to a mechanical voltage regulator: by regulating the alternator field current. The regulation is accomplished electronically with the use of transistors and diodes rather than by a vibrating armature relay.

What is AC chopper?

AC Chopper is a static converter which converts AC to AC without changing the frequency and AC choppers have been widely used to control average load voltage from a fixed ac source.

What is the use of BC549 transistor?

BC549 is a widely used transistor and it is mostly used in variety of general purpose applications in electronic circuits.

What is the theory of transistors and other semiconductor devices?

Theory of Transistors and Other Semiconductor Devices. 1. SEMICONDUCTORS 1.1. Metals and insulators. 1.1.1. Conduction in metals. Metals are filled with electrons. Many of these, typically one or two per atom in the metal, are free to move about throughout the metal.

What is the noise figure value of the transistor?

The noise figure value of the transistor is only 1.2db which is a quite good value to use this transistor in audio related applications, the maximum DC current gain is 800 and max collector dissipation is 0.5W which are other good features of this transistor to use it in audio pre amplification and amplification applications.

What is a bipolar junction transistor?

It’s a Bipolar Junction Transistor (BJT) and has three legs: If you turn it ON, current can flow through it from the collector to the emitter.