1) Switching power supply transformer 2) SMD transformers, Small transformers 3) OEM/ ... sets, Microcomputer equipment, printers, Terminals3. communications control equipment4.Switching power supply, chargers, alarm system5. UPS, VCD/DVD players, audio ... alarm system SHAPE AND DIMENSIONS: MTEF25 Serieshigh frequency transformer/horizontal type high frequency transformer/switch power supply transformer