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What is the difference between a transistor being use as a switch and as an amplifier?
Wiki User
∙ 10y ago
When used as a switch, a transistor is usually driven completely on (saturation) or completely off (cutoff). There are a few kinds of switching circuits though (e.g. ECL) that avoid saturation/cutoff to obtain faster speed, these operate on a fixed constant current and switch it through one of two transistors.
When used as an amplifier it is biased so that it operates in a linear, or near-linear, part of its characteristic curve so that the output faithfully copies the input.
Wiki User
∙ 10y ago
Wiki User
∙ 13y agoA: the switching refers to generating '1' '0' but they can be used to switch a load off on. basically the transistor diodes are forced to forward bias at that time both diodes are forward conducting and current can flow both direction therefore the term switch
Wiki User
∙ 12y agoAmplification is the process of linearly increasing the amplitude of an electrical signal.
- A transistor can act as an amplifier directly using the gain, b.
- Keep in mind that when a transistor is biased in the active (linear) region, the BE junction has a low resistance due to forward bias and the BC junction has a high resistance due to reverse bias.
i) DC and AC quantities
- Amplifier circuits have both ac and dc quantities.
- Capital letters are used will be used for both ac and dc currents.
- Subscript will be capital for dc quantities.
- Subscript will be lowercase for ac quantities.
ii) Transistor amplification
- A transistor amplifies current because the collector current is equal to the base current multiplied by the current gain, b.
- Base current (IB) is small compared to IC and IE.
- Thus, IC is almost equal to IE.
Wiki User
∙ 13y agoA transistor can be used as an amplifier because the electrons in the base are multiplied by a gain factor to give the collector current.
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What is the difference between transistor and processor?
Transistor is an tiny electronic device called electronic switch,which is building block of a processor. Processor is a data processing device consists of thousands or millions of transistors. Eg- Intel 8086 microprocessor has around 29000 transistors.
What is the difference between SL100 and CL100 transistor?
ITS AN NPN TRANSISTOR , GENERALLY USE AS A SWITCH GENREALLY IN COMMON EMITTER CONFIGURATON
Is a transistor a small electronic switch?
A transistor is used to switch electronic signals.
What are the applications of jfet transistor?
The Junction Field Effect Transistor (JFET)exhibits characteristics which often make it more suited to a particular application than the bipolar transistor. Some of these applications are: - High Input Impedance Amplifier - Low-Noise Amplifier - Differential Amplifier - Constant Current Source - Analogue Switch or Gate - Voltage Controlled Resistor
What is the HFE for good transistors?
A: HFE is meaning less uunless current is specified. For a switch force gain of 10 for an amplifier at low level maybe 100 for the same transistor.
Why a transistor is used as a amplifier and switch?
transistor has 2 output 1 and 0 so can be used as a switch
What is difference between transistor and amplifier?
A transistor is an electronic component. By itself it has little use. An amplifier is a complete, functional circuit, generally made up of several components. A transistor can be a component part of an amplifier, however an amplifier may be constructed without any transistors (using vacuum tubes instead, for instance).
What is use of bipolar junction transistor?
amplifier, switch, oscillator, etc.
What is the difference between a transistor used as a switch and an amplifier?
A transistor used as a switch is operated in saturated mode, where the ratio of base-emitter current over collector-emitter current is far more than hFe, or beta gain. The transistor is either fully on or fully off in this mode. A transistor used as an amplifier is operated in linear mode, where the ratio of base-emitter current over collector-emitter current is equal to or less than hFe, or beta gain. The transistor is partially on in this mode, and is operating as a current controlled current sink.
Why a transistor acts as a switch?
Only because the circuit that its embeded in is designed that way. Remember, a transistor is basicly an amplifier ... only if you design everything to go to the extreams will it act as a switch.
What is the difference between a switch and an amplifier?
A switch turns an electric machine off or on. An amplifier makes an electric machine louder. Amplifiers are used to make music louder when guitars are hooked up to them.
What is the difference between transistor and processor?
Transistor is an tiny electronic device called electronic switch,which is building block of a processor. Processor is a data processing device consists of thousands or millions of transistors. Eg- Intel 8086 microprocessor has around 29000 transistors.
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...
What is an unbiased transistor?
An unbiased transistor is one being used with no bias voltage to offset its operating point. If the input signal is very small it still can operate as an amplifier but the output will be non-linear. One use for an unbiased transistor is when the transistor is used as a switch, turning it on or off.
What are modes of biasing a transistor?
Transistor works as amplifier,oscillators,switch only when it is biased properly.biasing can be defined as how much amount of voltage that has to be supplied to each junction of the transistor in order to make it work as any one of the above given types.biasing voltage can be decided by seeing the V to I graph of a transistor
What is the difference between SL100 and CL100 transistor?
ITS AN NPN TRANSISTOR , GENERALLY USE AS A SWITCH GENREALLY IN COMMON EMITTER CONFIGURATON
Is a transistor a small electronic switch?
A transistor is used to switch electronic signals.
