Characteristics of a transistor

[tmoan]

i have to submit a report on the characteristics of a transistor.
there's three zones
blockage zone
saturation zone
and modulation zone

i understand the first 2
but the modulation zone i couldn't find out what it is

please help if you can
thanks

 

[sa2il149]

please someone help the guy
I have the same question
thanks

 

[kamerling]

i have to submit a report on the characteristics of a transistor.
there's three zones
blockage zone
saturation zone
and modulation zone

i understand the first 2
but the modulation zone i couldn't find out what it is

On wikipedia they are called "regions of operation"

The blockage zone is the cutoff region.
The saturation zone is the saturation region.
The modulation zone would be the active (or forward-active) region. This is the region where the transistor can be used for amplification. The base-emitter and collector emitter junctions are forward biased, and the collector current is below the saturation current.

 

[sa2il149]

than you

 

[rbj]

the modulation zone is the zone that lies between the cutoff zone and saturation zone. in that zone, we like to model the transistor as a "current-controlled current source" and use these "h parameters" to describe it.