... efficiency 2.Low magnetic leakage 3.Customized Fine PCB Electronic Transformer , EI TransformerA. Feature: 1. Good Price-Function Ratio 2 ... : ISO9001, CESI, UL, CE, RoHS and SGS. D. Testing Items: 1. No-load Test(No-load Current, No-load Voltage, No ... & Control System 8. Comparison on Transformer with Toroidal, EI, R, CD Shape CoreF. Label Info: Certificate Logo, Basic Electronic Data, Manufacture' ...