Summary: This document is an engineering report describing a 30W high efficiency standby power supply based on the TOPSwitch-JX TOP265KG design. This film adapter is available as a 110 VDC to 400 VDC input with a 12 V, 30 W output universal evaluation platform. This document includes power specifications, circuit diagrams, bill of materials, Transformer specifications, printed circuit board layout, and performance data. 30W high efficiency standby power PCB physical map 30W high efficiency standby power circuit diagram 30W high efficiency standby power PCB layout 30W high efficiency standby power supply component list See the PDF document for details (click on the PDF file to download) Transformer A transformer is an electrical device that is used to transfer electrical energy from one circuit to another through electromagnetic induction. It consists of two coils of wire, called the primary and secondary coils, which are wrapped around a common iron core. When an alternating current is passed through the primary coil, it creates a magnetic field that induces a voltage in the secondary coil. The voltage in the secondary coil can be stepped up or stepped down depending on the number of turns in each coil. Transformers are used in power transmission and distribution systems to step up the voltage for long-distance transmission and step it down for distribution to homes and businesses. They are also used in electronic devices such as power supplies and audio amplifiers. Transformer,Planar Transformer,Resonant Transformer,Charging Pile Main Transformer Huizhou Show-Grand Electronics Co., Ltd. , https://www.sgtransformer.com