The HVT Division of Essex X-Ray helps bring together in the UK a group of suppliers who are at the forefront of technology in high voltage, pulsed power and high energy physics applications. Pulsed Power Systems is a world class manufacturer of electrical resistors. Based in Jarrow, North East England, since 1963, the company started out as Morganite Resistors and later became Allen-Bradley Electronics. During the 1960's the company pioneered the development of a ceramic carbon resistor to replace conventional metal products in Extra High Voltage switchgear. Today ceramic carbon, high voltage, high energy, non-inductive resistors are used in electrical transmission systems throughout the world.
Applications range from spark plugs to power stations.
The company was established as HVR International in April 1991 with the aim of expanding the range and variety of applications for ceramic resistors into new markets. The unique properties of the product in absorbing pulses of electrical energy offer protection to a wide range of electrical apparatus. HVR is now the major supplier of ceramic carbon resistors to multinational corporations world-wide, and in some cases, the sole supplier. The products facilitate the measurement of currents in the range 10mA to 50kA, 0.1Hz to 100MHz without electrical connection to the circuit under test. The instruments are particularly suited to the measurement of pulse currents which demand the accurate measurement of both low-frequency and high frequency harmonic components.