This preview shows page 1. Sign up to view the full content.
Unformatted text preview: BJT “on” the voltages are: VEB > ____
But, is there a Base current IB?> _
and VCB < _ a Base curr VBC What does it mostly consist
But, is there____ (same as ent IB?____). does it mostly E 332 Spring 2013
of? BJT Design BJT Design Narrow-Base Diode Emitter Current >> Base Current EE 332 Spring 2013 PNP BJT Operation Base current IB (remember the base is n-type): Some electrons ___________ with injected holes.
Base current into p+ (forward biased EB). Some electrons injected IB (remember the base is n-type): Few electrons Some electrons ___________ within reverse
swept from thermal generation injected holes. Some
biased CB junction. electrons injected into p+ (forward biased EB). Few electrons swept from thermal generation in reverse
biased CB junction. Base current IB is small, but it’s there. Sign of IB goes against
the direction of electron injection (see figure).
EE 332 Spring 2013
Base current IB is small, but it’s there. Sign of IB goes against Some electrons injected into p+ (forward biased EB). Bipolar Junction Transistors: Basics Few electron...
View Full Document
This document was uploaded on 02/18/2014.
- Spring '09