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Why X'sistor Are Active Device?

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konarkk said:
Why X'sistor and Diode are Consider AS Active Device
Click to expand...


Active Devices are components that are capable of controlling voltages or currents and can create a switching action in the circuit. In other words, "Devices with smarts!" Examples are Diodes, Transistors and Integrated circuits.

A Passive Device is one that contributes no power gain (amplification) to a circuit or system. It has no control action and does not require any input other than a signal to perform its function. In other words, "A components with no brains!" Examples are Resistors, Capactitors and Inductors .

**broken link removed**

Ciao,
Shiva
 

Active devices have in general non-linear current-voltage characteristics, while passive only linear. Diodes are an example of highly nonlinear I-V devices. X'sitor, I've never heard about
 

saruman1983 said:
....... X'sitor, I've never heard about
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Me too.
I can imagine that a TRANSISTOR was ment.
Therefore: SARUMAN 1983, are you really to lazy to write the complete word ?
Don´t forget, also some older engineers participate in this forum who are not familiar with these bloody/silly abbreviations.
 

Thankx

But I wanna To know that What cause this Device to provide a energy...

Is It a recombination Process Or Current Gain.....

Added after 2 minutes:

or Other Cause
 

Hi,
I thought active devices should have power gain and from that point of view, diodes should be left out. I am not sure if it is a subject of classic dicussion with out any convincing result?
Regards,
Laktronics
 

What about diode...........? it doesn't provide any gain.
 

desperado1 said:
What about diode...........? it doesn't provide any gain.
Click to expand...

And it's considered as a passive device.

Active devices have the ability to electrically control electron flow.
 

konarkk said:
Thankx

But I wanna To know that What cause this Device to provide a energy...

Is It a recombination Process Or Current Gain.....

Added after 2 minutes:

or Other Cause
Click to expand...

Active devices such as transistors and diodes doesn't provide any energy.
The larger output power just comes fron the bias power (Vcc, Vdd, etc).
In case of BJT, the large output current/power is controlled by a very much lower current in its base. That power/current simply comes from the bias...:|
 

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