Medes Electronics
Manufacturer of 10 to 800 kVA, 3 phase UPS products primarily for the European voltages and frequencies. UPS line includes chargers, rectifiers, inverters and static switch units. A manufacturer for high reliability UPS system. Provides battery charger and discharger, DC rectifer, and static transfer switch.
http://www.medes-ups.com/

Pronic Electronics
Manufacturers of rocker switch, push switch, toggle switch, slide switch, and inlet socket. UL, CSA,VDE recognized amongst others. Based in China and Taiwan.
http://www.pronic.com.tw/

Interactive Power Electronics Online Text
Online course that includes diode circuits, fully controlled 1-phase and 3-phase bridge rectifiers, semi-controlled rectifier circuits, and switch mode power supply.
http://services.eng.uts.edu.au/~venkat/pe_html/peintro.htm

Superior Phase Converters
Convert 220v/440v Single Phase into 220V/440V 3-Phase Power. We Specialize in CNC, 3-Phase Farm Equipment, EDM, Woodworking, and all other 3-Phase Equipment! High quality phase converters
http://www.superiorphase.com

Phase Technologies
Phase Converter – Phase Perfect uses the latest advances in solid state power switching technology to produce a phase converter unlike any other company; digital phase converters.
http://www.phaseperfect.com

Phase Quest
Maker of rotary and static converters to power 3-phase motors from a single phase line.
http://www.phase-quest.com

JD Machines
Rotary phase converters run three-phase equipment on existing 220V single-phase power.
http://www.rotaryphaseconverters.com

Taylor Electronics, Inc.
Manufactures a phase-balance voltage monitoring device used to prevent 3 phase motors and other equipment from operating or attempting to start up with one dead phase.
http://taylorphaseguard.com/

EuroTech Machinery Ltd.
New Zealand. Manufacturer of electronic phase converters - single phase to three phase. Importer of tooling and combination woodworking machines from Felder and Hammer.
http://www.eurotech.co.nz/

Kay Industries
Phase Converters - Phasemaster Rotary 3-Phase Converters and Miniphase Static Converters from Kay Industries, the world leader in single to three phase power conversion
http://kayind.com