These transformer power supplies were usually not stabilized (although stabilized ones also existed), and the voltage was selected by switching the pins of the transformer’s secondary winding ...

When reaching for a power supply design it’s normal here in 2022 to reach for a switching design. They’re lightweight, very efficient, and often available off-the-shelf at reasonable pr… ...

The flyback design is a switched-mode power supply (SMPS) that’s been used for 70+ years and still going strong. This supply—also called a power converter—has two distinct operating phases ...

Some power losses that occur in series primary components, such as the bridge rectifier, common-mode choke, and switch, are not directly associated with energy stored in the flyback-transformer core.