To be and active device it has to have the ability to take power from some source and provide power amplification to the signal.diode also control flow of electron.
I agree,but in active component electricity is able to control electricity.In diode forward-reverse bias characteristic is giving me an intuitive idea of electricity is able to control electricity.???A passive componet is one that one that is incapable of amplification. A device needs a minimum of three terminals to do amplification.
How so? Because the current through the diode is controlled by the voltage across the diode?I agree,but in active component electricity is able to control electricity.In diode forward-reverse bias characteristic is giving me an intuitive idea of electricity is able to control electricity.???
ok then,so let me call it a VCD (Voltage Control Device).VCD is also an Active device.hence Diode is Active device????How so? Because the current through the diode is controlled by the voltage across the diode?
By your line of reasoning, a resistor is an active device -- after all, the voltage across it controls the current through it. Or, equivalently, the current through it controls the voltage across it.ok then,so let me call it a VCD (Voltage Control Device).VCD is also an Active device.hence Diode is Active device????
Not really... a two terminal device can amplify.A passive componet is one that one that is incapable of amplification. A device needs a minimum of three terminals to do amplification.
hmm,you are right sir,but my intention is not to prove a resistor a active component.I just want to know that if according to the definition of active component, active component electricity is able to control electricity.In diode forward-reverse bias characteristic is giving me an intuitive idea of electricity is able to control electricity.???or every component R,L,C Etc in some sense we control electricity is able to control electricity.By your line of reasoning, a resistor is an active device -- after all, the voltage across it controls the current through it. Or, equivalently, the current through it controls the voltage across it.
I have just started to learn about electronics,i am sorry if somewhere i interpret your answers incorrect. Truly saying,now i am totally confused what people want to say diode is active or passive?or we can't say any thing about this?and how?The real question is what, exactly, do you mean by "electricity is able to control electricity"?
Keep in mind that any meaning that could be used to say that a resistor (or other clearly passive device) is an active device is automatically a meaning that cannot be used to say anything about whether any device is active or passive.
Clear as mud? https://en.wikipedia.org/wiki/Passivity_(engineering)I have just started to learn about electronics,i am sorry if somewhere i interpret your answers incorrect. Truly saying,now i am totally confused what people want to say diode is active or passive?or we can't say any thing about this?and how?
i learn all this from http://www.allaboutcircuits.com/textbook/semiconductors/chpt-1/active-versus-passive-devices/
plz crystal-clear it.
Thank you !!
Note how this page says that a diode is a passive component, while this page
Note how this page says that a diode is a passive component, while this page
https://en.wikipedia.org/wiki/Electronic_component
says they are active.
Like I said -- no universally agreed unambiguous definition.
Personally, I say they are passive.
By that definition capacitors and inductors are also active devices.My definition of a passive device is one that only consumes power (attenuates the signal) and doesn't alter the signal. By this definition, a diode is definitely active, since it significantly alters the signal.
A tunnel diode only has 2 leads...........................A passive componet is one that one that is incapable of amplification. A device needs a minimum of three terminals to do amplification.
by Duane Benson
by Aaron Carman
by Aaron Carman