Mixed circuit configuration

Abstract

In a hybrid circuit arrangement (61), in particular a protective circuit arrangement, comprising at least one first outer conductor section (2), wherein a first mechanical bypass switch (8) is arranged in the first outer conductor section (2), wherein the first semiconductor switch arrangement (11) is connected in parallel with the first bypass switch (8), wherein the hybrid circuit arrangement (61) is characterized by a first electronic control unit (13) to activate the first semiconductor switch arrangement (11), wherein The hybrid circuit configuration (61) is characterized by a bypass switch activation unit (62) to which at least one field coil (63) of the bypass switch (8) is connected and wherein the bypass switch activation At least one control terminal (64) of the unit (62) is connected to the first electronic control unit (13), it is proposed that the electronic control unit (13) and / or the bypass switch activate the unit (62) is designed to activate the unit (62) with at least one first current Or a second current which is greater than the first current controls the excitation coil (63) of the bypass switch (8) in a preconfigured manner.

Description

technical field [0001] The present invention relates to hybrid circuit configurations. Background technique [0002] Hybrid circuit configurations are known. These are control units or circuit configurations characterized by both mechanical switch contacts and semiconductor switches interrupting or creating current paths through the circuit configuration concerned. When power is removed, a mechanical switch, often called a bypass switch, is first opened, whereupon the current is commutated through the circuit arrangement to the semiconductor switch, which then cuts off the current. [0003] The so-called bypass switch takes center stage here because it is always in the current flow and its internal resistance is highly relevant for keeping the permanent power dissipation and self-heating of the circuit configuration to a minimum. The internal resistance is basically determined by the type and condition of the switch contacts of the bypass switch and the contact pressure. ...

AI Technical Summary

Problems solved by technology

However, proper switching requires at least 100,000 operating cycles of current-limited switching

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