... -amplifier, audio system, home electrical appliance, lighting, Medical equipments, Halogen quartz lamp, UPS industry, industrial control area ect….: Specification:1 ... b. Primary 100V, 115V, 120V, 230V, 240V / 50 Hz c. Secondary Customized Power range: 20VA to 10KVAd. Standard UL506, UL1411 ... worker, organized a full quality control and R&D team.c. Use refined material, such as core, wire, and copper, ...