NPN transistor
A bipolar transistor made of a thin base of P-type silicon or geranium sandwiched between a collector and an emitter, both of which are made of N-type material.
Aviation Maintenance Technician Handbook — Airframe, p. G-24
A bipolar transistor made of a thin base of P-type silicon or geranium sandwiched between a collector and an emitter, both of which are made of N-type material.
Aviation Maintenance Technician Handbook — Airframe, p. G-24