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The control current of a transistor flows between which two terminals?
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How does a transistor electronically switch the output on?
A transistor can electronically switch the output by controlling the flow of current between its two terminals, called the collector and emitter. It has a third terminal, called the base, which acts as a control input. When a small current is applied to the base terminal, it influences the flow of current between the collector and emitter terminals, effectively turning the transistor "on" or "off" and allowing it to change the output state.
How many possible states does a transistor have?
The transistor is a semi conductor. The materials in which it is constructed has three terminals and which to connect to external input. The connection in addition has another terminal which changes current. Therefore the output is high input is lower.
Why is the base current in transistor very small?
Because a transistor's collector current is proportionally limited by its base current, it can be used as a sort of current-controlled switch. A relatively small flow of electrons sent through the base of the transistor has the ability to exert control over a much larger flow of electrons through the collector.
What is FET?
FET is abbreviation of Field Effect Transistor. This is a transistor in which current is controlled by voltage only and no current is drawn. It is a high input impedence device and is used in computers, telecommunication and control circuits. This transistor is better in certain parameters as compared to BJT, that is Bipolar Junction Transistor.
What is a resistor and a transistor?
there is 2 types of componant 1-passive compnant:who provide a fixed voltage to active componant we can not use them in rectification or amplification,registor,capacitor,inductor 2-active componant:we can use its as a amplifier r rectifier,diode,transistor,scr,etc (we can use registor for voltage drop,so it is passive componant)
How does a transistor electronically switch the output on?
A transistor can electronically switch the output by controlling the flow of current between its two terminals, called the collector and emitter. It has a third terminal, called the base, which acts as a control input. When a small current is applied to the base terminal, it influences the flow of current between the collector and emitter terminals, effectively turning the transistor "on" or "off" and allowing it to change the output state.
Why is a resistor positioned before the transistor?
It is done in order to protect the transistor from the heavy currents flowing (resistor reduces current flow) into its terminals.
Is BJT is a current control device or voltage control device?
transistor is a current controlled device. as the current flows through the base of the transistor , it works like a close switch.
What the difference between Transistor and resistor?
The difference between a Transistor and a Resistor is that a transistor is designed to amplify the electrical current, whereas a Resistor is designed to reduce the electrical current.
What is the difference between the UJT and BJT transistors?
UJT (UniJunction Transistor): It is a transistor with only one junction and three terminals: an emitter (E) and two bases (B1 and B2). BJT (Bipolar Junction Transistor): This type of transistor consists of two junctions and three terminals, namely Emitter "E", Base "B" and Collector"C". There are two types of BJT, i) PNP and ii) NPN.
What is the purpose of the base of a transistor?
Recombination of negative and positive charge carriers
What is the difference between a switching transistor and an ordinary transistor?
In the switching transistor the output current is controlled by the (current) and this is also called current controlled current device (CCCD). But in ordinary switch we controlled output current physically...
How a transister as a switch?
A transistor is a miniature electronic semiconductor device with 3 terminals that uses minute particles called electrons to control the movement of current. The 3 terminals are the emitter or input, the collector or output, and the base or controller. when a small voltage is applied to the base, the electrons from the emitter are released and travels to the collector causing current to flow. This is the 'on' state of the transistor. When voltage is increased, the base will also increase allowing more electrons to flow. If voltage supply is stopped, the base will close and no electron will move and the transistor is now on its 'off' state.
How transister work as a switch?
A transistor is a miniature electronic semiconductor device with 3 terminals that uses minute particles called electrons to control the movement of current. The 3 terminals are the emitter or input, the collector or output, and the base or controller. when a small voltage is applied to the base, the electrons from the emitter are released and travels to the collector causing current to flow. This is the 'on' state of the transistor. When voltage is increased, the base will also increase allowing more electrons to flow. If voltage supply is stopped, the base will close and no electron will move and the transistor is now on its 'off' state.
How does a npn transistor switch work to switch a load on and off?
let's insert a transistor in place of the switch to show how it can control the flow of electrons through the lamp. Remember that the controlled current through a transistor must go between collector and emitter. Since it is the current through the lamp that we want to control, we must position the collector and emitter of our transistor where the two contacts of the switch were. We must also make sure that the lamp's current will move against the direction of the emitter arrow symbol to ensure that the transistor's junction bias will be correct as in Figure below(b).
What is the difference between capacitor and transistor?
transistor either increase or decrease current bt capacitor stores the energy
How many possible states does a transistor have?
The transistor is a semi conductor. The materials in which it is constructed has three terminals and which to connect to external input. The connection in addition has another terminal which changes current. Therefore the output is high input is lower.
