Step-Down Transformer - Break The Limits Of Power Standards

Stepping Up and Stepping Down: Using Transformers to Change Voltages to Desired Levels

NEC Requirements for Overvoltage Protection

Design Tips for Split-Rail Power Supplies

Thomas Research Step-down Auto-Transformer, 125VA, 480V or 347V to 277V AC, Thomas Research 480:347:277V Series Step-down Transformers, Step-down

480:347:277-125VA Thomas Research Step-down Transformer - 480/347V to 277V 125VA

Step up, step down transformers, and reverse feeding

POWER TRANSFORMER RATINGS

POWER TRANSFORMER RATINGS

Advantages of Isolated DC/DC Converters

Guitar Pedal Power Supply - Projects - KiCad.info Forums

Low Voltage Transformers

Step-Down Transformer - Break The Limits Of Power Standards

Why do American homes seem to have 110v and 220v supplies? Do they use ring Mains in homes there too? - Quora