High Voltage Concepts
Designs and manufactures high voltage power supplies and high voltage diagnostic equipment, including general purpose supplies, x-ray power supplies and high voltage dividers.
http://www.hvconcepts.com/

High Voltage Connection
Sales representative for high voltage power supplies and other high voltage products. Includes technical articles on high voltage.
http://www.highvoltageconnection.com

Ameesco
An Independent source of High Voltage Test Equipment Services and Consulting
http://ameesco.com/

What is High Voltage
eeProductCenter delivers a full spectrum of critical design information about the latest ICs and electronic components for engineers facing challenging, design-in decisions. eeProductCenter continuously reports new product news with analysis and insight to help you make more informed product/technology decisions.
http://www.chipcenter.com/circuitcellar/november99/c119r16.htm

Ross Engineering Corporation
Ross Engineering Corporation is an ISO 9001:2000 certified company that specializes in producing the highest quality High Voltage, Control, Measurement, Test and Safety Equipment since 1964. Our devices are sold worldwide and are designed primarily for use from 0.01 millivolt to 900KV.
http://www.rossengineeringcorp.com/

Rectifiers and Electronics
High voltage testing equipment, high voltage testing equipment, high voltage tester, ac/dc high voltage tester, hipots, high voltage, dc high voltage test set, spark tester, di-electric tester, oil test set, impulse generator, portable dc high voltage test set, million mega ohm meter, ac high current primary current injection test set, secondary injection test set, loading transformer, short time current test set, meter test bench, voltage dips and interruption test set, battery chargers, stabilizer power supply, heating rectifier, servo controlled industrial voltage stabilizers, ac welding machine, inductive load, phantom load, magnetizing coil, pre-heating / function, induced voltage & induced frequency test set
http://www.testingequipments.in

North Star Research Corporation
Manufactures high voltage equipment of a variety of types including plasma implantation equipment, plasma sources, high voltage probes, and DC accelerators for ion implantation and irradiation.
http://www.northstar-research.com

High Voltage Information
High voltage reference information, including articles, books and relevant links. Also included is a buying guide for high voltage parts, instruments and services.
http://www.highvoltageinfo.com/

Chaos Labs High Voltage Projects
High voltage projects including ignition coil driver, high voltage transformers, and a 60 kV pulse generator.
http://members.tripod.com/hvprojects/highvoltage/

High Voltage Equipment Suppliers
A link list of high voltage component suppliers.
http://home.earthlink.net/~jimlux/hv/supplier.htm