Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / fazley rafy
I've heard various definitions of passive and active device.They are:
1.Active devices can generate Power but passive devices can't.
Here can BJT alone be termed as a active device or BJT in the amplifier config. is termed as a active device?
2.If a device can control carrier by means of another electrical signal,it's calle active device.
3.One prof. of mine told me,on asking that the classification of diode being active and passive changes depending on whether we see it from Electronics Engg point of view or Electrical Engg point of view.He went to explain that in Electrical Engg.,diodes are mostly used as rectification devices and thus are passive
But from Electronics Engg. point of view,diodes are used as both oscillators and rectifiers and other wave shaping Page on Purposes it can be both active or passive
I see that both first and second statements mean the same.But the contentious device is the diode.
It acts as passive device from first definition,but by second definition it should be an active device as the voltage across it controls carrier flow.
Also some varieties like the Tunnel Diode and Gunn Diode are used as oscillator.So by both first and second definition,these are active device.
So what exactly all this active and passive stuff.I'm totally confused.
Can someone please clear all the fuss and PRECISELY DEFINE ACTIVE and PASSIVE nature.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
FlexiHopper and MetroHopper?
In a UPSR what is the limit on the number of nodes that form the ring?
Why the feeding frequency to a microprocessor is twice the operating frequency?
what is the different between gsm and cdma?
IN A PN JUNCTION DIODE,( ON FORWARD BIAS ) WHEN ELECTRONS AND HOLES PAIRS MADE AND CURRENT FLOWS,THEIR IS NO END OF ELECTRONS AND HOLES IN A LITTLE SEMICONDUCTOR DEVICE.
What is a p-n junction diode? State and explain some of its applications.
Draw and explain a mod-10 counter.
Define why series inductor and l-section filters cannot be used with half-wave rectifiers?
Suppose in market 4n27 is not easily available so which opto isolator can I use at the place of this? What is 4n27
why should you consider youself fit to be hired by jspl
A thread has to access the address space of all other threads in the same process and can therefore mess up the stacks of other threads. Why is this not a protection problem? Could the same be allowed to occur for processes, e.g. one process writing data into the stack of other.
the number of factors of 576?and the logic for this question?
What is HSN? How do we apply it?
Is it possible to isolate a drive by installing a offline ups and also drive should be protected during normal power supply availability and is the use of isolation transformer necessary.
Magnetostriction is a phenomenon whereby the magnetisation of a ferromagnetic material leads to a change in
