ПРИМЕНЕНИЕ ТАСИТРОНОВ В СХЕМАХ С ИНДУКТИВНЫМ НАКОПИТЕЛЕМ ЭНЕРГИИ

Abstract

Features of generating high voltage in a pulsed or weakly pulsating form for different applications with an inductive energy storage device are considered. High voltage (tens of kilovolts) is generated due to self-induction when the storage is disconnected using a high-voltage tacitron-type switch device from a low-voltage pumping current source (with voltage less than 1 kV). The tacitron is a gas-discharge triode with a dense control grid, which provides initiation of a discharge between the cathode and anode and pumping the storage at a positive voltage, and then disconnecting it from the pumping current source, when a negative voltage of 20-200 V is applied to the grid for the blocking of the electron flow to the anode. Tacitrons are able to turn-off currents from a few to hundreds of amperes in the presence of a high voltage between the cathode and anode that takes a time of the order of 1 μs. Diagrams of changes in time of the current and voltage of the tacitron and the load during the generation of both pulsed and weakly pulsating voltages are considered. In the latter case, an additional storage (filter) capacitor is connected in parallel with the load, supplying the load by energy during the pumping periods of the inductive storage, and a high-speed pulse gas-filled rectifier diode is proposed to use for the dynamic separation of the storage capacitor and tacitron circuits in the said periods. Formulas are given that allow one to evaluate the parameters of the high voltage generation process. It is proposed to use a combined switching device containing tacitron and pulse gas-filled diode in one envelope with a common cathode electrode to simplify the high voltage generator circuit.