: Silicon Controlled Rectifiers (SCRs), Unijunction Transistors (UJTs), and triggering circuits.

Placed across the load to smooth out the rectified AC ripples into steady DC.

Understanding the relationship between True Power (W), Apparent Power (VA), and Reactive Power (VAR) is vital for industrial efficiency. 3. Power Supplies and Smoothing

The format of N4 exams is highly consistent. By working through the last three years of national papers, you will identify recurring questions on transistor biasing and RLC resonance. Conclusion