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Does a transistor allows control of large currents with small current signals?
Wiki User
∙ 12y ago
Yes. The ratio of collector current and base current is DC gain, also known as beta, or hFe.
Wiki User
∙ 12y ago
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What is the best way to describe the function of a typical transistor in an electronic circuit?
A transistor in a circuit can do many things. It can be used to amplify voltage signals, or current signals, create current and voltage sources, make buffers, and so on. Transistors also find a major use in logic circuits (ie, where signals can either be a '0' or a '1'), where they essentially act as a switch, and can be used to create inverters, AND gates, OR gates, and all sorts of useful components. By itself, a transistor is a three-terminal device that can control the current going through two of its terminals through the voltage applied at the third terminal. But there are many applications for a transistor in its many different configurations, which is why it is so important in modern electronic technology.
Is a transistor a small electronic switch?
A transistor is used to switch electronic signals.
What electronic component is a gate or switch for electrical signals?
Transistor or vacuum tube.
Does the galvanometer measures AC and DC current?
It is used to detect very small DC currents only. For AC signals Detectors are used.
Can alternating current be transmitted through fiber optic cable?
No. Nor can direct current, for that matter. Fiber optics is designed to transmit light signals, not electrical currents.
What is the purpose of a transistor in a circuit?
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.
What is functions transistors?
Transistor amplify and switch electrical power and electronic signals. These are made of semiconductor material with three or more terminals used to connect to an external circuit.
How can current pass through us without being dangerous?
Basically, the amount of damage caused, or the dangerousness of the current, depends on how strong the current is (the so-called "current", measured in amperes) and how long the current passes through us. Small currents are harmless - in fact, our body uses small currents in nerve signals. And a strong current, for a very brief time - as in a discharge of static electricity - can be harmless, too, although it may cause minor discomfort.
What is mining of transistor?
A transistor is a device used to switch power between electrical components. Transistors work to amplify existing signals as well as open and close circuits.
What is ment by transistor?
semiconductor device used to amplify and switch electronic signals and electrical power.
What is transitors?
A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power
What is the difference between voltage and signals?
That's a pretty good question. In computers a change in voltage level is usually the data signal. There are many industrial applications where a change in current is used as a signal. In fact ANY change in voltage or current can be used. Data signals are very weak (high impedance) compared to power supply voltage and currents.
