Isolation Transformer, Low Voltage, 100 VA, 1 x 230V, 2 x 115V, 10V, 10 A: Electronic Transformers: Amazon.com: Industrial & Scientific
Amazon.com: Yinleader 500W Voltage Transformer Power Converter(220V to 110V, 110V to 220V) Step Up/Down Converter 110/120 Volt - 220/240 Volt : Electronics
Amazon.com: 15 kVA Encapsulated Isolation Transformer - 120V Primary - 230V 1P Secondary - NEMA 3R : Industrial & Scientific
Amazon.com: Patioer 1000W Voltage Converter Transformer(230V to 110V, 110V to 230V), Step Up/Down Converter 110/120 Volt - 220V/230V/240V Volt (1000W) : Electronics