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What does a transistor act like in a circuit?
A transistor works when the electrons and the holes start moving across the two junctions between the n-type and p-type silicon. By turning a small input current into a large output current, the transistor acts like an amplifier. But it also acts like a switch at the same time.
What are the advantages of transistor?
Advantages of Transistor:
- Smaller mechanical sensitivity.
- Lower cost and smaller in size, especially in small-signal circuits.
- Low operating voltages for greater safety, lower costs, and tighter clearances.
- Extremely long life.
- No power consumption by a cathode heater.
- Fast switching.
What are the three advantages of transistor?
What Are The Advantages Of Using Transistors?
- no cathode heater (which produces the characteristic orange glow of tubes), reducing power consumption, eliminating delay as tube heaters warm up, and immune from cathode poisoning and depletion;
- very small size and weight, reducing equipment size;
How do you use a transistor as a switch?
Some of the basic Applications of Transistor as a Switch. In a transistor, unless a current flows in the base circuit, there is no current can flow in the collector circuit. This property will allow a transistor to be used as a switch. The transistor can be switched ON or OFF by changing the base.
How does a PNP transistor work?
PNP Transistor. A PNP transistor receives positive voltage at the emitter terminal. The positive voltage to the emitter allows current to flow from the emitter to the collector, given that there is negative current to the base (current flowing out of the base to ground).
How does NPN transistor work?
The NPN transistor is designed to pass electrons from the emitter to the collector (so conventional current flows from collector to emitter). The emitter “emits” electrons into the base, which controls the number of electrons the emitter emits.
What is an example of a transistor?
The definition of a transistor is an electronic device that works by controlling the flow of the electrical current. An example of a transistor is something combined in large numbers with microcircuits into a single circuit board and used in a computer. YourDictionary definition and usage example. “Transistor.”.