Current Commutated Chopper

Current Commutated Chopper

Current Commutated Chopper

Features:

• Easy to operate
• Compact design
• Longer serving life

Technical Specifications:

• Principle: Conversion of a Fixed DC to Variable DC Voltage.
• Type of Chopper: Current Commutated Chopper.
• D. C. Source: 24V DC (Unregulated).
• Trigger Circuit: UJT Trigger Circuit with variable trigger frequency to trigger the SCR.
• Commutation: Class “B” Type.
• Output Voltage: 5V to 20V approximately (variable).
• Controls: 1. Mains ON / OFF.
• Frequency Control.
• Load Control.
• Test Points: Multicoloured Test Points are provided at various stages in the circuit to observe the waveforms and voltages.
• Indicator: Mains ON / OFF.
• Experiments: 1. Study of SCR Trigger Circuit for a Morgan’s Chopper.
• Observe the output voltage with Motor Load.
• Observe the effect of Load Control on Output.