product specifications: single-phase, from 50VA to 3KVA power, from 50Hz to 60Hz power supply, on the other hand, Small volume, low loss, low temperature rise, high efficiency Application: Used for television, electrical control system, charge in-verter,, elecrtric apparatus, audio equipment etc. Note: According to the need of users, the transformer's power Which is from 10w to 2kw can be produced standard and special