EEL series High-frequency Transformer
Features:
wide range of high frequency,
wide range of operating voltage,
wide range of output power,
good thermal stability.
Application:
Widely used in PBX power,
LCD power supply,
power inverter UPS power supply,
computer power supply,
energy saving lamps, and so on
https://www.yozeachina.com/high-frequency-transformer-list/eel-series/eel22-high-frequency-switching-transformer.html