SCR Characteristics Apparatus with Regulated Power Supply

The SCR (Silicon Controlled Rectifier) Characteristics Apparatus with Regulated Power Supply is a specialized instrument designed to study the electrical characteristics and behavior of SCRs under controlled conditions.

Key features include:

Two DC regulated power supplies: one variable supply for anode voltage (e.g., 0-50 V at 50 mA) and another for gate trigger voltage (e.g., 0-3 V at 50 mA).

Analog meters for monitoring the voltage and current in the SCR circuit.

Secure terminals or sockets for connecting the SCR device under test and other components.

A sturdy panel with clear markings and controls, enabling precise regulation during experiments.

This apparatus allows users to plot the V-I characteristics of the SCR, observing critical parameters such as forward blocking, forward conduction, and reverse blocking modes. It demonstrates how the SCR remains off until triggered by a gate signal and how it latches on to conduction once triggered.

The SCR is a four-layer, three-terminal semiconductor device functioning as a controlled switch, used extensively in power electronics for controlling high voltage and current applications. The apparatus is widely used in educational and research labs for understanding SCR switching behavior, gate control, latching, holding currents, and other fundamental working principles of the device.