Electronic circuit arrangement for use in an area exposed to explosion hazards

US11121538B2 · kind B2 · utility

Assignee

• ECOM INSTRUMENTS GMBH · DE

Inventors

• Norbert Sack · Lauda, DE
• Axel Sailer · Weikersheim, DE

Key dates

• Filing date: Dec 21, 2015
• Grant date: Sep 14, 2021
• Expiry date: May 8, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02H11/00
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

An electronic circuit arrangement may include first and second electric connections connectable to first and second electronic devices, respectively. A first electric conduction path may connect the first and second electric connections, and a second electric conduction path may connect a tee point provided in the first electric conduction path to an electric ground connection. First and second switching elements may be provided in the first and second electric conduction paths, respectively, between the tee point and the respective electric connection. Each switching element may switch between an open state, in which the switching element may interrupt the respective electric conduction path, and a closed state. In response to connecting the second electronic device to the second electronic connection, the second switching element may switch to the open state, and the first switching element to the closed state only after the second switching element is already in the open state.