The ETB-267 Zener Diode Voltage Regulator Trainer is a compact and user-friendly educational model designed to demonstrate the voltage regulation characteristics of a Zener diode. This trainer allows learners to study how a Zener diode maintains a constant output voltage across a varying input or load. Ideal for electronics and electrical engineering labs, the kit includes a built-in DC power supply, voltmeters, and test points for observing real-time behavior under different load conditions.