What is PNP transistor used for?

What is PNP transistor used for?

Application of PNP Transistor They are used as switches. They are used for conducting current in heavy motors. Amplifying circuits also have PNP transistors in them. The use of these transistors is also made in robotic applications.

How do you read a PNP transistor?

If you are testing PNP transistor, you should see “OL” (Over Limit). Keep the postitive lead on the BASE (B) and place the negative lead to the COLLECTOR (C). For an good NPN transistor, the meter should show a voltage drop between 0.45V and 0.9V. If you are testing PNP transistor, you should see “OL” (Over Limit).

What is transistor explain PNP and NPN?

NPN and PNP refer to the arrangement of the pieces that make up the transister. An NPN transistor has a piece of P-type silicon (the base) sandwiched between two pieces of N-type (the collector and emitter). In a PNP transistor, the type of the layers are reversed. Below is a typical cross section of a transistor.

Where are PNP and NPN transistors used?

The transistors PNP and NPN are BJTs and it is a basic electrical component, used in various electrical and electronic circuits to build the projects. The operation of the PNP and NPN transistors mainly utilizes holes and electrons. These transistors can be used as amplifiers, switches, and oscillators.

What is the function of PNP and NPN transistor?

NPN transistors are used as a sink to the current i.e., current flows to the Collector. It means the current points inwards. PNP transistors are used as a source to the current i.e., current flows out of the Collector. In the NPN transistor, electrons are important current carriers.

How does a PNP junction work?

A PNP transistor is a bipolar junction transistor constructed by sandwiching an N-type semiconductor between two P-type semiconductors. A PNP transistor has three terminals – a Collector (C), Emitter (E) and Base (B). The PNP transistor behaves like two PN junctions diodes connected back to back.

How do you read a transistor number?

The typical format for the transistor is a digit, letter and serial number. The first digit is the number of leads minus one. An ordinary bipolar transistor has three leads, so the first digit for it will be 2. The letter N is for semiconductors, so this will be the letter written on a transistor using this system.

What is a transistor in physics?

A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. A voltage or current applied to one pair of the transistor’s terminals controls the current through another pair of terminals.

Why is NPN transistor prefered over PNP?

When the transistors are used in electronic circuits for switching purpose, then the NPN transistor is more preferable than the PNP transistor because the switching speed of the NPN transistor is greater than the PNP transistor .

How does a PNP transistor work in a circuit?

A PNP transistor is just like an NPN in terms of function, what it accomplishes in a circuit. Like any transistor, a PNP provides amplification and/or switching capabilities to turn a load on or off connected to it. This is exactly like an NPN. The difference in the PNP transistor from the NPN is how power is biased to the transistor for it to function.

What does NPN and PNP stand for in transistors?

While, in PNP transistors, holes are the majority carriers, hence current flows due to the movement of holes. NPN transistor is the acronym used for Negative-Positive-Negative transistors . As against, PNP transistor is an acronym used for Positive-Negative-Positive transistor.

What are the functions of a NPN transistor?

Applications of NPN transistor As NPN transistors are used for signal amplification. Thus used in amplifying circuits. It also finds its applications in logarithmic converters. One of the major advantages of NPN transistor is its switching characteristic. Thus widely used in switching applications. These are also used in high-frequency applications.