Date 8/30/06 Simon and delabs
Simon: we have many meanings for saturation,
delabs: means turning on, also means no longer linear, or it is got fixed up, not varying in accordance to any formula
Simon: that is what is concluded of. but we just wanted to be sure.
delabs: like you put salt in water. after some time no more salt can be dissolved, that is the state of saturation, In Electrical, no more relationship with V - I - R. Any increase in voltage or reduction it is same
Bipolar transistors are so named because their operation involves both electrons and holes. These two kinds of charge carriers are characteristic of the two kinds of doped semiconductor material; electrons are majority charge carriers in n-type semiconductors,
This concludes this episode of Saturated Talk with Simple Simon. Next week, a new Episode which will cover effects of Lightning Bolts.
To learn more about Saturation in NPN and PNP Devices see - Transistors Williamson Labs
Transistor Operation - A transistor in a circuit will be in one of three conditions. Cut off (no collector current), useful for switch operation.In the active region (some collector current, more than a few tenths of a volt above the emitter), useful for amplifier applications.
Chapter 5: Bipolar Junction Transistors
"Saturation also implies that a large amount of minority carrier charge is accumulated in the base region. As a transistor is switched from saturation to cut-off, this charge initially remains in the base and a collector current will remain until this charge is removed by recombination."
Lessons In Electric Circuits - Bipolar Transistors
When a transistor has maximum current through it, it is said to be in a state of saturation (fully conducting).