The ETB-223 Transistor as a Switch model is a dedicated training kit designed to demonstrate the working of a transistor in switching applications. This trainer helps students understand how a transistor operates in cutoff and saturation regions to function as an electronic switch in digital logic circuits, relay drivers, and power control applications.

This unit is equipped with a clearly marked circuit, onboard transistor, input signal generation, load connections, and LED indicators to visualize the switching action. It is ideal for electronics and electrical engineering students learning the practical utility of transistors in digital logic and automation circuits.

Key Features:

• Demonstrates transistor switching operation between cutoff and saturation

• Built-in power supply and signal input

• Clear circuit layout with test points

• LED indicators to show ON/OFF switching states

• Safe and durable construction for repeated lab use

• Supports study of NPN and PNP configurations

Educational Objectives:

• Understand transistor biasing for switching operation

• Explore the behavior of transistors as a digital switch

• Measure base current, collector current, and voltage drop

• Application of transistors in switching loads such as relays or LEDs