... Frequency transformer suitable for EL/CCFL Inverter or DC/DC converter Customer's designs are welcome Switching power transformer pulse transformer ... .3, 10, 13, 16, 19, 22, 25, 28, 30, 33, 35, 40, 42, 50, 55, 60 EF series: EF-4539, 16 ... , 20, 25, 32 ERL series: ERL-28, 35, 39, 42, 49 ETD series: ETD-29, 34, 39, 44 ...