What is NPN Transistor? Definition, types & applications.
Semiconductor device - P-I-N Diode | Britannica
What is NPN Transistor? - Definition, Construction & Working - Circuit Globe
NPN Transistor - Definition, Types, Construction and Working
bjt - Why isn't the NPN diode model two diodes connected in series? - Electrical Engineering Stack Exchange
Lessons In Electric Circuits -- Volume III (Semiconductors) - Chapter 4
PNP transistor
PNP Transistor Tutorial - The Bipolar PNP Transistor
File:Transistor-diode-npn-pnp.svg - Wikimedia Commons
Transistor diode model - Wikipedia
NPN Transistor Tutorial - The Bipolar NPN Transistor
Electronic Circuits/Introduction to the simple diode npn model - Wikiversity
File:Transistor-diode-npn-pnp.svg - Wikimedia Commons
File:NPN transistor as diode.png - Wikipedia
led - NPN Transistor with Diode logic - Electrical Engineering Stack Exchange
2SD1403 Transistor 6A 600V With Freewheeling Diode
What is NPN Transistor? - Definition, Construction & Working - Circuit Globe
NPN Transistor: What is it? (Symbol & Working Principle) | Electrical4U
How to Test a Transistor & Diode » Electronics Notes
What are NPN and PNP diodes? How do they work? - Quora
