Class B Chopper with Motor

The Class B Chopper with Motor Trainer from Glass Agencies is an advanced educational and laboratory training system developed to provide practical understanding of regenerative DC motor control using Class B chopper configuration. This trainer enables learners to study second-quadrant operation, where the motor operates in braking mode and electrical energy is fed back to the source, demonstrating effective speed control and energy recovery. Class B choppers are widely used in regenerative braking systems, controlled DC drives, traction applications, and energy-efficient motor control solutions, making this trainer highly relevant for engineering, electrical, and electronics education. The unit is equipped with a DC motor, high-quality power semiconductor switches, freewheeling diodes, gate drive circuitry, and clearly labeled input and output terminals that allow controlled application of DC input and safe observation of motor behavior during regenerative operation. Carefully selected components, effective heat dissipation arrangements, and stable triggering circuits ensure smooth switching action and dependable performance during repeated laboratory experiments. The front panel is systematically arranged with user-friendly controls for input voltage variation, duty cycle adjustment, braking control, switching frequency selection, and motor load observation, reducing wiring complexity and simplifying experimental procedures. Electrical safety is ensured through insulated terminals, protective circuitry, fuses, and a robust enclosure that supports secure handling during live operation. This trainer supports detailed study of important concepts such as Class B chopper operation, second-quadrant characteristics, regenerative braking, armature voltage and current reversal, energy feedback to the source, motor speed response, and current waveform analysis. Learners can connect external instruments such as digital voltmeters, ammeters, tachometers, and oscilloscopes to observe voltage, current, braking behavior, and switching waveforms under different operating conditions. The Class B Chopper with Motor Trainer is widely used in engineering colleges, polytechnic institutes, and technical training centers to demonstrate practical aspects of regenerative DC motor control, braking techniques, and power electronics fundamentals. Glass Agencies follows strict quality inspection procedures during manufacturing to maintain uniform build standards, stable performance, and accurate experimental results across all units.