Patent ID: 8760214

Claim:
A switching device for switching a current between a first connection and a second connection, comprising: a series connection of at least two JFETs, of which a lowermost JFET is connected to the first connection or the lowermost JFET is connected in a cascode circuit via a control switch to the first connection; at least one further JFET which is connected in series to the lowermost JFET, wherein the JFET which is distanced furthest from the lowermost JFET is indicated as the uppermost JFET and with its drain connection is connected to the second connection; wherein a stabilisation circuit for stabilising the gate voltages of the JFETs is connected between the gate connection of the JFETs and the first connection; wherein an additional circuit is connected between the gate connection of the uppermost JFET and the second connection, and this additional circuit draws the potential at the gate connection of the uppermost JFET to the potential at the drain connection of the uppermost JFET; and wherein a symmetrising network comprising an RC-network arranged between the gates of the JFETs and the first connection is present.