Steve Jensen Consultants, Inc. Offers electromagnetic compatibility consulting include analysis and design of EMI power line filters for switching power supplies. http://www.stevejensenconsultants.com

MLE Power Supply Design UK Power supply design, inverters, converters, UPS, switch mode, naval power supply, SMPS, DC, AC. http://www.power-supplies.co.uk/

Cell Expert Consultant on topics of batteries and power sources for OEMs and other electronic equipment designers and manufacturers. http://www.cell-expert.com/

Powersmith Consulting Provide consulting services for power supply manufacturers and OEM end users, in distributed power architecture. http://www.powersmithconsulting.com

Reactive Power Solutions, LLC A consulting firm dedicated to the electrical power conversion field. http://www.reactivepowersolutions.com

Espey Mfg. and Electronics Corp. Designer and manufacturer of custom magnetic components and power supplies for both military and industrial applications. (AMEX:ESP). http://www.espey.com/