Patented ARC-current limitation

The patented arc current limitation works like a non-linear resistance. Until a specific current level is reached, it has low Ohm resistance. Once that level is exceeded, the resistance changes, so that current remains constant, whatever voltage applies. A graph showing the idealized voltage/current relationship across the resistance is given below.




Once the current threshold is reached, current remains constant despite increasing voltage. The resistance progressively increases in

The arc current limiter is switched into the high voltage circuit like a resistance. If there is an arc, it is absolutely
sure, that current stays limited at the threshold level.

Without arc current limiting, current peaks up to 1000 times the rated current can occur. Our patented arc current limitation keeps current peaks down to 4 times of the rated current, at the very most.


·                Prolonged life of filament in electronic beam guns

·                Processes, such as coating, run more smoothly as arcs are suppressed, instantly

·                Almost complete elimination of the contamination of deposited film which normally arises from the extremely high currents associated with arcs

·                higher stoichiometry

·                Enhanced equipment reliability

·                Due to the very small current fluctuations (di/dt), there are fewer breakdowns. This leads to cost savings on such items as cables, filters and surge-voltage protection devices.


The Arc current limiter can be configured to meet your specific requirements. Versions for continuous current levels of 10A and voltages of 100kV can be provided.