Voltage Suppressors.
Voltage Suppressors.
Voltage suppressors are rectifier avalanche diodes that dissipate power pulse in the breakdown region of the reverse volt-ampere curve within a limited period of time. They are used for protection of semiconductor power devices and capacitors from switching surges, as well as to limit voltage in electrical equipment at frequencies up to 500 Hz.
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Estel
Avalanche thyristors are used in static power converters and in other DC and AC circuits with a frequency of up to 1,000 Hz. Under certain conditions of reverse voltages, they can be used without any additional protection measures.
Estel
Fast distributed gate thyristors and fast strong distributed gate thyristors (high-speed pulse thyristors) are used in oscillators, modulators, inverters, and electric drive systems with thyristor-controlled pulse control with frequency of up to 20,000 Hz, where pulse operating currents, short on/off switching intervals, and high rates of current build-up are primarily required. The thyristors are characterized by high current-carrying capacity at high frequencies.
Estel
Thyristors are used in DC and AC converters with an operating frequency of up to 1,000 Hz, in inverting and switching circuits of converter setups for electric locomotives and other types of electrically propelled vehicles, in power rectifiers for electroplating baths, for charging batteries, in high-voltage rectifier-inverter units of DC transmission line substations, and in aircraft de-icing equipment.
