Product Details The EI35 CQC Power Transformer is a compact EI-core transformer designed for low-voltage power conversion and electrical isolation in electronic equipment. Its EI35 magnetic core format provides a practical solution where a conventional laminated power transformer is required while keeping the overall transformer size suitable for compact equipment.As a power transformer, the EI35 design transfers electrical energy between the primary and secondary windings through magnetic coupling. Depending on the selected winding configuration, it can be used to step mains voltage down to a lower AC voltage for subsequent rectification, regulation or direct AC operation. The actual input voltage, secondary voltage, rated power and winding configuration should be matched to the requirements of the target circuit.The EI35 core format is commonly used in small power transformer designs for electronic and control equipment. Its relatively compact construction makes it suitable for PCB-mounted or chassis-integrated power supplies where available installation space is limited. Different winding specifications can also allow the same core format to be adapted to different output requirements.The CQC designation is an important consideration for applications where transformer safety and certification requirements form part of the component selection process. For production equipment, buyers should verify the applicable certificate, rated voltage, insulation system and test documentation for the specific transformer configuration rather than relying on the EI35 model designation alone.Typical applications include low-voltage electronic power supplies, control circuits, industrial control equipment, instrumentation, consumer electronics and other electrical products that require isolated AC power. The transformer can also serve as the front-end power conversion stage in circuits where the secondary output is later rectified into DC.When selecting an EI35 transformer, the most important parameters are primary voltage, secondary voltage, rated VA or output power, operating frequency, winding configuration, insulation requirements and mounting dimensions. The transformer should be selected according to the actual load rather than core size alone. Operating a transformer above its rated load can increase temperature rise and affect long-term reliability.For PCB or equipment integration, designers should also confirm the transformer footprint, pin arrangement, mounting orientation and clearance around the primary and secondary circuits. Adequate separation between mains-side and low-voltage circuitry is particularly important in isolated power applications.The EI35 CQC Power Transformer provides a compact transformer platform for manufacturers and engineers developing low-power electronic equipment, control systems and isolated power circuits where a conventional EI-core transformer is preferred.