Difference b/w small signal and large signal equivalent operation(transistor)

mifo · 2013-04-30T09:00:51+00:00

Please take a look at my confusion- - Small signal equivalent ckts and Large signal equivalent ckts = transistor eq ckts operating at ac signals of low amplitude and at high frequencies, can be represented by various model( pi, hybrid etc) - So my doubt is, are they differentiated on the basis of frequency of operation? - If yes, then what is the frequency range?

Difference b/w small signal and large signal equivalent operation(transistor)

mifo
@mifo-JESyka

Updated: Oct 21, 2024

Views: 1.4K

Please take a look at my confusion-
- Small signal equivalent ckts and Large signal equivalent ckts = transistor eq ckts operating at ac signals of low amplitude and at high frequencies, can be represented by various model( pi, hybrid etc)
- So my doubt is, are they differentiated on the basis of frequency of operation?
- If yes, then what is the frequency range?

0

Replies

Howdy guest!

Dear guest, you must be logged-in to participate on CrazyEngineers. We would love to have you as a member of our community. Consider creating an account or login.

Replies

Jeffrey Arulraj

Member • May 4, 2013

Small signal analysis not only limited to low power but also the Frequency of operation below the Lower cut off frequency

Large signal analysis is for studying operation above the upper cut off frequency

Are you sure? This action cannot be undone.
Cancel
mifo

Member • May 5, 2013

Small signal analysis not only limited to low power but also the Frequency of operation below the Lower cut off frequency Large signal analysis is for studying operation above the upper cut off frequency
Thanks for your reply "Conquerer", but still
-Are you implying that small signal analysis is meant for dc frequencies?
-And aren't the cutoff frequencies dependent on circuit elements?

Are you sure? This action cannot be undone.
Cancel
Jeffrey Arulraj

Member • May 20, 2013

Yeah true Small signal analysis is not on DC frequencies alone It extends to nearly audio range

Yeah the cut off frequencies are determined by the Capacitors and inductors in the circuit

Are you sure? This action cannot be undone.
Cancel
mifo

Member • May 20, 2013

Yeah true Small signal analysis is not on DC frequencies alone It extends to nearly audio range

Yeah the cut off frequencies are determined by the Capacitors and inductors in the circuit

Some of my doubt still remains, I guess I've got to solve questions

Well anyway, thanks for your reply

Are you sure? This action cannot be undone.
Cancel
Jeffrey Arulraj

Member • May 20, 2013

Post your question friend lets see what we can do

Every transistor has its own operating frequency range

Refer the data sheet that will be effectively explain your frequency range issues

Are you sure? This action cannot be undone.
Cancel