What is transistor theory?

What is transistor theory?

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 are the 3 function of transistors?

transistor, semiconductor device for amplifying, controlling, and generating electrical signals.

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.

Why is called transistor?

The word transistor is a combination of transfer and resistance. This is because it transfers the resistance from one end of the device to the other end or we can say, transfer of resistance. Hence, the name transistor. Transistors have very high input resistance and very low output resistance.

What is transistorized voltage regulator?

The transistorized electromechanical voltage regulator is simply a conventional automotive regulator wired to a transistor circuit which takes the place of the generator field function. See Fig. 2. It is used with an ordinary unregulated power supply or a battery charger and a 12-volt storage battery.

What is AC chopper?

AC Chopper is An AC to AC Converter employs to vary the An AC to AC Converter employs to vary the rms voltage across the load at constant frequency.

How do PNP transistor?

In a PNP transistor, the base current which enters into the collector is amplified. The flow of current is typically controlled by the base. Current flows in the opposite direction in the base. In a PNP transistor, the emitter emits “holes”, and these holes are collected by the collector.

Who invented transistor?

William Shockley
John BardeenWalter Houser Brattain

Why transistor is used in regulator?

Transistor Series Voltage Regulator. This regulator has a transistor in series to the Zener regulator and both in parallel to the load. The transistor works as a variable resistor regulating its collector emitter voltage in order to maintain the output voltage constant.

What is duty ratio of a chopper?

duty cycle decides the ouput average voltage of chopper which will appear accros the load. mathematically it is ratio of Turn On time/ Total time(Ton+Toff) Arka D.