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Basically a diode is a combinstion of pN junction but the transistor is made with three terminals EMITTER,, BASE ,, JUNCTION.. and diode is just a combination of positive and negative terminal . diode and transistors are both used as a switch .. but a transistor is more widly udes than a diode. and diode has also very important in electronics DIGITAL SYSTEM to make the screen's ..and transistors are used in amplifiers the group of transistors make an amplifier . and we use a diode in seven segment display ....diode is small and carry less current due to its small size but transistor get large current.

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A diode has two connections. It allows current to flow in one direction and not in the other. They are used for rectification in power supplies, detection of AM radio, blocking of current etc.

A Transistor has three connections. Current is controlled between the emitter and collector, by a small current on the base. They are used as switches, amplifiers and regulators.

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12y ago
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13y ago

I don't know which kind of switch, diode or transistor could act as. (I've missed that class). All I know is that a transistor is formed by two diodes.

If any of them can act as a switch on a electronic circuit I think that a diode should be simpler to do that. Anyway, only an technical on electronics can give you the correct answer.

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12y ago

diode is allow one direction flow.but transistor is allows any directional flow

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Q: Which is better as a switch diode or transistor?
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Related questions

What is Transit time in transistor or diode?

A transistor is a switch. A diode directs the flow of current.


How transistor work as a diode?

A: Actually a transistor have two diode with the base mas a common terminal. the characteristics of these tow diodes however are not the same as a common diode


Can you use diode in place of a transistor?

no,we cant use transistor by combination of two diodes because we will come across a condition called current hogging.it means large amount of current flows through the device,diode can just rectify the signal but not amplifies it. Transistors however, can be used as diodes.


Can you use transistor as diode?

its the simplest thing to do. There are three legs in a transistor, one each of collector, base and emitter. So if you need to use it as a diode, just connect either collector-base or emitter-base. Say, if you use an NPN transistor, then the base region will be the anode of diode and emitter or collector will be the cathode of the diode.


Is a diode like a transistor?

No. A diode is not like a transistor, and a transistor is not like (two) diode(s). Taken in isolation, the emitter-base and collector-base junctions of a transistor appear to be diodes, but they are coupled together so that the base-emitter current affects the collector-emitter current.


Who is mostly used in the case of diode?

transistor//


Did someone ask the question can you use a transistor as a diode there is a device called a transistor diode connect base to either c or e forgot which to make a zero bias diode?

You can use a transistor as a diode if you connect the base to the collector. Any forward current through the base-emitter junction would cause a corresponding increase in the available current through the collector-emitter junction. Since the base-emitter and collector-emitter junctions are in parallel, this would effectively be a diode, but a true diode would be a better solution if diode functionality is what seek. A: There are actually two diodes, per se, inside a transistor. The base to emitter diode will suffice. By tying the collector to the base it will in effect be two diodes in parallel.


When both junctions of NPN diode are reverse biased then the diode is in which mode?

Transistor will be in OFF mode.


When the both junction of npn diode is reverse biased then the diode in which mode?

Transistor will be in OFF mode.


When both junctions of NPN diode are reverse biased then diode is in which mode?

Transistor will be in OFF mode.


How can the bipolar junction transistor be used as a diode?

A: Yes it can but why ? This is frequently done when the diode is used for biasing purposes on another transistor and must be matched identically to the transistor's E-B junction characteristics. Thus 2 matched transistors are used with one just being used as a diode.


What is the disadvantage and advantage of photo diode and transistor?

photo diode donot work for long distance photo diode act as a receiver