SMT Machine Operator Interview Questions and Answers

A photo transistor is a type of transistor that converts light into electrical signals.

• Photo transistors are used in various applications such as light sensors, optical communication systems, and barcode scanners.

• They are made of a semiconductor material that is sensitive to light.

• When light strikes the base of the photo transistor, it causes a flow of current between the collector and emitter.

• Photo transistors are commonly used in automatic lighting systems, solar panels, an...read more