Class C Chopper without Motor

The Class C Chopper without Motor Trainer from Glass Agencies is a specialized educational and laboratory training system developed to provide practical understanding of DC–DC power control using Class C chopper configuration. This trainer allows learners to study the combined operation of Class A and Class B choppers within a single circuit, enabling bidirectional power flow and effective control of output voltage without connecting a motor load. Class C choppers are widely applied in regenerative power systems, controlled DC supplies, and advanced power electronics applications, making this trainer highly relevant for engineering, electrical, and electronics education. The unit is equipped with high-quality power semiconductor switches, freewheeling diodes, resistive and inductive dummy loads, gate drive circuits, and clearly labeled input and output terminals that allow controlled application of DC input and observation of circuit behavior in real time. Carefully selected components, efficient heat dissipation arrangements, and stable triggering circuits ensure smooth switching action, repeatable operation, and dependable experimental results during repeated laboratory sessions. The front panel layout is logically arranged with user-friendly controls for duty cycle variation, switching frequency adjustment, input voltage control, and load selection, reducing wiring complexity and simplifying experimental setup. Electrical safety is ensured through insulated terminals, protective circuitry, fuses, and a sturdy enclosure that supports secure handling during live experiments. This trainer facilitates detailed study of key concepts such as Class C chopper topology, bidirectional current flow, voltage control in both first and second quadrants, freewheeling operation, ripple characteristics, and efficiency comparison with other chopper classes. Learners can interface the unit with external instruments such as digital voltmeters, ammeters, and oscilloscopes to monitor output voltage and current, analyze switching waveforms, and observe circuit response under different operating conditions. The Class C Chopper without Motor Trainer is widely used in engineering colleges, polytechnic institutes, and technical training centers for demonstrating practical aspects of DC–DC conversion and advanced chopper operation.