The history of flyback transformers dates back to the early days of television technology. Here the flyback transformer circuit was invented to control the horizontal movement of the electron beam in the cathode-ray tube (CRT).

As televisions and computer screens with CRT technology became more common in homes, engineers were faced with the challenge of developing a power supply system that could efficiently convert and regulate the high voltages required by the CRT. This led to the invention of the flyback transformer, which revolutionized power supply design and laid the foundation for modern electronics as we know it today.

Unlike traditional linear transformers that provide a continuous output, flyback transformers operate by storing energy in a magnetic core during the “on” phase of the switching cycle and releasing it during the “off” phase. This energy storage and release mechanism enables efficient power conversion and regulation, making flyback transformers particularly suited for applications requiring low to medium power output.

The adoption of transistors and later MOSFETs enabled higher switching frequencies, reducing transformer size, and improving efficiency. This development paved the way for their use in compact, lightweight power supplies, particularly in consumer electronics, industrial power supplies, and medical equipment.

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