PQ transformer

A PQ transformer operates based on the principles of electromagnetic induction, similar to other transformers, but with a design optimized for high efficiency and compact size.

Here’s a detailed look at how it works:

Working Principle

1. Electromagnetic Induction: When an alternating current (AC) flows through the primary winding, it creates a varying magnetic field around the core. This magnetic field induces a voltage in the secondary winding through electromagnetic induction.
2. Core Design: The PQ core shape (a type of ferrite core) is designed to maximize the window area for windings while minimizing the core volume. This design helps in achieving high efficiency and compact size.
3. Winding Configuration: The windings are typically made of copper or aluminum and are insulated with high-temperature materials. The primary and secondary windings are placed around the core in such a way that the magnetic flux linkage is maximized.
4. High-Frequency Operation: PQ transformers are often used in high-frequency applications, such as switched-mode power supplies (SMPS). The core material, usually Mn-Zn ferrite, is chosen for its low core loss at high frequencies.