Cosine Firing Technique Circuit Trainer

The Cosine Firing Technique Circuit Trainer is designed for studying SCR firing using cosine firing techniques. It provides a practical platform for understanding SCR triggering, firing angle control, pulse generation, and controlled rectification. The trainer includes isolated AC power supplies, an SCR assembly, pulse transformers, a potentiometer for firing angle control, and associated electronic components for practical experimentation. The unit is housed in an ABS plastic cabinet with a clearly printed insulated circuit board. Designed and manufactured by Atico Export to meet the practical demands of modern laboratories.

Power Supplies:

• Isolated AC power supply: 6–8 V, 250 mA.
• Isolated AC power supply: 12–0–12 V, 500 mA.
• Mains operated: 230 V, 50 Hz ±10%.

Components Mounted on Panel:

• SCR assembly.
• Resistive load.
• 2 pulse transformers: 1:1:1.
• Firing angle control through potentiometer.
• Diodes, capacitors, ICs, and resistors.

• Fuse protection against short-circuit conditions.
• Front panel with high-class insulated printed circuit board featuring clearly printed circuits and symbols.
• Instruction manual.
• 2 mm patch cords.
• High-voltage test points with 2 mm sockets.
• Housed in an ABS plastic cabinet.
• Trainer size: 12 × 10 inches.