SCR Single & Three Phase Half Full Controlled Bridge

The SCR Single & Three Phase Half-Full Controlled Bridge Converter is designed for studying single-phase and three-phase controlled bridge converter circuits using SCR firing techniques. It provides a practical platform for understanding phase control, SCR operation, controlled rectification, and AC-to-DC power conversion. The trainer includes power supply arrangements, SCR and diode circuits, gate control firing circuits for R, Y, and B phases, and both resistive and inductive loads for practical experimentation. The unit is housed in a metal cabinet with a clearly printed insulated circuit board. Designed and manufactured by Atico Export to meet the practical demands of modern laboratories.

Power Supplies:

• +15 V / 150 mA.
• Isolated supply: 0–110 V or 24 V at 1 A.
• Mains operated: 415 V, 50 Hz ±10%.

Components Mounted on Panel:

• SCR.
• Diodes.
• AC phase control by gate control firing circuit for R, Y, and B phases.
• Separate circuits for single-phase and three-phase operation.
• Resistive load with lamp and 20 W resistor.
• Inductive load.

• Protective cover.
• Front panel with high-class insulated printed circuit board featuring clearly printed circuits and symbols.
• Fuse and MCB protection against short-circuit conditions.
• Instruction manual.
• Connections through 4 mm coloured sockets.
• 4 mm patch cords.
• Housed in a metal cabinet.
• Trainer size: 14 × 12 inches and 18 × 12 inches.