The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2014
Filed:
Feb. 03, 2010
Jürgen Biela, Zürich, CH;
Johann W. Kolar, Zürich, CH;
Daniel Aggeler, Zürich, CH;
ETH Zurich, Zurich, CH;
Abstract
The invention relates to a switching device for switching a current between a first connection () and a second connection (), comprising a series connection of at least two JFETs (J-J), of which a lowest JFET (J) is connected to the first connection (), or the lowest JFET (J) is connected in a cascade circuit to the first connection () via a control switch (M), and at least one further JFET (J-J), which is connected in series to the lowest JFET (J), wherein the JFET (J) farthest away from the lowest JFET (J) is referred to as the uppermost JFET (J) and is connected with the drain connection to the second connection (), and wherein a stabilization circuit (D-D) is connected between the gate connections of the JFETs (J-J) and the first connection () in order to stabilize the gate voltages of the JFETs (J-J). An additional circuit (), which draws the potential at the gate connection (G) of the uppermost JFET (J) to the potential at the drain connection (D) of the uppermost JFET (J), is switched between the gate connection (G) of the uppermost JFET (J) and the second connection ().