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A transistor has three leads, called the base, the collector, and the emitter. The voltage of the base (in relation to the ground) determines whether and how much current flows from the collector to the emitter. An NPN transistor can be off, meaning that there is no (or very little) voltage from the base; partly on, meaning that there is some voltage from the base; or saturated, meaning that it is receiving full voltage from the base. A saturated transistor allows the current to flow from the collector to the emitter unopposed; a partly on transistor provides some resistance; and a transistor that is off provides full resistance. A PNP transistor is similar to an NPN transistor except it performs the opposite function: when it is saturated, the current is fully resisted; when there is no voltage from the base, the current is not at all resisted; and when it is partly on there is some resistance.
In sum, a transistor controls the flow between the collector and the emitter based upon the voltage of the base. this is carbage. a transistor is basicaly two diodes back to back base being common TO BOTH DIODES because of inpurity doping on purpose at the depletion region the transistor will control the current flow on the other diode. Once it reaches saturation both diodes conduct therefore current can flow in BOTH DIRECTIONS ACROSS IT.
Wiki User
∙ 15y ago
Wiki User
∙ 11y agoA transistor is a semiconductor device used to amplify and switch electronic signals and electrical power.
The transistor is the fundamental building block of modern electronic devices, and is ubiquitous in modern electronic systems.
Wiki User
∙ 9y agoThe transistor is the one that controls the collector and emitter of power supply. The flow of power supply is based on voltage.
Wiki User
∙ 16y agoBased on the application, a transistor can be used as a switch or a signal amplifier in a circuit. - Neeraj Sharma
Wiki User
∙ 12y agoamplify electronics signals and power
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How do you use the Transistor output terminals of an electronic counter in a Electrical control circuit?
They use transistor as the purpose to transfer the voltage
Why is it necessary to bias a transistor when it is to be used as an amplifier?
Biasing is necessary in a transistor circuit to keep the transistor working. Without proper biasing, the circuit will fail
What is transistor relay driver?
a transistor circuit for driving the coil of a magnetic relay.
The circuit in a bipolar transistor that carries 5 percent of the current flow is the?
the base circuit
What is the typical use of a transistor in an analog circuit?
amplification
How do you use the Transistor output terminals of an electronic counter in a Electrical control circuit?
They use transistor as the purpose to transfer the voltage
Why is it necessary to bias a transistor when it is to be used as an amplifier?
Biasing is necessary in a transistor circuit to keep the transistor working. Without proper biasing, the circuit will fail
What is the purpose of the Unijunction Transistor?
A Unijunction Transistor is a transistor that acts solely as a switch.
What is transistor relay driver?
a transistor circuit for driving the coil of a magnetic relay.
What is the ac equivalent circuit for a transistor?
Transistor are DC output, Triac are AC output.
How transistor acts as a amplifier?
A transistor does not act as an amplifier. It is used as a component in an amplifier circuit.
Internal circuit diagram and working principle of transistor npn sl100?
This mechanism is how a transistor works.
DC blocking in a transistor is achieved by?
Including a series capacitor in the input and/or output circuit of the transistor. If the capacitor in the output circuit is omitted there will be a dc component in the output.
What part in an electric circuit opens and closes the circuit?
A switch, switching transistor, or circuit breaker usually does.
How do you define transistor biasing?
Selection and setting of a transistor's operating pointto meet circuit functional requirements.
The circuit in a bipolar transistor that carries 5 percent of the current flow is the?
the base circuit
What is the typical use of a transistor in an analog circuit?
amplification
