Relaxation Oscillator using UJT

The Relaxation Oscillator using UJT from Glass Agencies is an educational and experimental setup used to study the working principle of a unijunction transistor based oscillator circuit. This apparatus generates non-sinusoidal waveforms by charging and discharging a capacitor through a resistor until the UJT reaches its triggering point. Once triggered, the capacitor discharges rapidly, creating a repetitive waveform that clearly demonstrates relaxation oscillation behavior. The frequency of oscillation depends mainly on the values of resistance, capacitance, and the intrinsic standoff ratio of the UJT, allowing users to understand the relationship between circuit parameters and output response. The system is assembled with clearly labeled components and terminals, making circuit connections easy to understand during experiments. A stable power source supports consistent operation throughout repeated testing cycles, while protective elements help prevent damage from incorrect connections or excessive current flow. The compact and firm structure makes the unit suitable for regular use in academic laboratories, training centers, and technical institutions. Simple control access allows smooth adjustment of resistance values, enabling users to vary oscillation frequency and observe corresponding changes in waveform shape. Test points are provided for easy connection of oscilloscopes and measuring instruments, allowing observation of capacitor voltage, emitter voltage, and output pulse waveform. This apparatus is widely used to demonstrate timing circuits, pulse generation, and triggering concepts in electronics and power electronics courses. It helps learners gain practical understanding of UJT characteristics and its application in timing, sawtooth wave generation, and control circuits. The clear waveform output supports accurate analysis of charging and discharging cycles, peak point voltage, and conduction behavior of the UJT. The layout minimizes unwanted noise and interference, supporting clean experimental observation. Glass Agencies maintains strict inspection standards during manufacturing to ensure consistent electrical performance and operational safety. The Relaxation Oscillator using UJT serves as a valuable learning tool for understanding basic oscillator concepts, pulse generation methods, and semiconductor switching action, making it an important addition to electronics laboratories focused on analog circuits, timing applications, and hands-on experimental learning.