Protection device against flashover in a transmitter circuit
AssigneeLicentia Patent-Verwaltungs-G.m.b.H.
InventorsHorst Beeken, Hans-Heinrich Vitters
Life of this patent
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Abstract
A device for protecting a circuit against flashovers due to an overvoltage, which device includes first and second controllable arc discharge members connected in series with one another and in parallel with a current path of the circuit which is to be protected against flashover, and ignition control components connected for causing an arc discharge to be produced in the first member in response to the appearance of a current which exceed a selected value in the current path and for causing an arc discharge to be produced in the second member in response to the production of an arc discharge in the first member.
Claims8
An electric circuit protecting device a circuit current path against an overvoltage that produces a current surge in the circuit current path, said device comprising:
- a first arc discharge member having means defining an arc current path and a control input and arranged to have a current arc produced along said arc current path of said first member when a voltage having at least a selected amplitude is present across that arc current path and a selected signal is present at said control input of said first member;
- a second arc discharge member connected in a series arrangement with said first member and having means defining an arc current path and a control input and arranged to have a current arc produced along said arc current path of said second member when a voltage having at least a selected amplitude is present across that arc current path and a selected signal is present at said control input of said second member;
- means for connecting said series arrangement in parallel with the circuit current path of the electrical circuit;
- first ignition circuit means for controlling only said first member and for connecting the electrical circuit to said control input of said first member and for applying the selected signal to said control input of said first member in response to the appearance of a current which exceeds a selected value in the circuit current path of the electrical circuit;
- and
- second ignition circuit means for controlling said second member, said second ignition circuit means comprising:
- a source of electrical energy, current limiter means, connected between said source and said control input of said second member, for supplying current to said control input of said second member, and an arc discharge control means, connected between said control input of said second member and said arc current path of said first member, for causing the selected signal to be applied to said control input of said second member in response to the production of a current arc along said arc current path of said first member.
Dependencies are inferred from the claim text.