What is a Transformer?

Transformer is a device that transfers AC electric power from one circuit to another circuit or multiple circuits at a constant frequency. It has two windings - primary winding (which is connected to the power supply), and second winding (which is connected to the load). Transformers operate on the principle of Faraday's law of Electromagnetic Induction (EMI) and are used to step up/step down the input voltage supply. They provide galvanic isolation between input and output circuits and are ideal for power transmission & distribution, impedance matching, DC-DC power supplies, telecom, LED lighting, power over ethernet (PoE), capacitor charging, battery charging, solar micro-inverters, AC-DC power supplies, military, and aerospace applications.

When the primary winding of the transformer is connected to the AC power supply, AC current flows through the primary winding. This AC current constitutes an alternating magnetic field in the transformer’s core that couples both the primary and secondary windings. This alternating magnetic field cuts both the primary & secondary coils and induces an alternating electromotive force across the primary & secondary winding. The magnitude of induced emf across the primary & secondary winding is directly proportional to the rate of change of flux linkage with coils and the number of turns of the windings. The direction of induced emf can be found by Lenz's law.

Transformers from the leading manufacturers are listed on everything PE. You can use the filters on the left side to narrow down the list of products based on your requirements - Type, Power Rating, Turns Ratio, and other parameters. Our parametric search tool will scan multiple manufacturer websites to identify Transformers that meet your requirement. You can then download datasheets, request quotations via everything PE. Your inquiry will be routed to the manufacturer or their representative who will give you more information on the product.