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.

Abstract: A housing for receiving an electrically operated apparatus may include an inner housing part at least partially defining a housing interior. The inner housing part may include an inner passage opening. The housing may also include an outer housing part disposed on a side of the inner housing part facing away from the housing interior. The outer housing part may include an outer passage opening. The outer passage opening and the inner passage opening may at least partially define an acoustic duct for discharging airborne noise from the housing interior. The acoustic duct may be closed by a fluid-tight and airborne noise-permeable membrane. Further, the housing may include a porous member disposed within the acoustic duct configured to prevent an ignition breakthrough from the housing interior into an external environment outside of the outer housing part.

Abstract: A device arrangement may include an electronic device having a display. A cover may be secured on the display. The cover may include a first transparent cover element and a second transparent cover element. A transparent liquid may be disposed in a sandwich-like manner between the first cover element and the second cover element.

Abstract: A housing for receiving an electrically operated apparatus may include an inner housing part at least partially defining a housing interior. The inner housing part may include an inner passage opening. The housing may also include an outer housing part disposed on a side of the inner housing part facing away from the housing interior. The outer housing part may include an outer passage opening. The outer passage opening and the inner passage opening may at least partially define an acoustic duct for discharging airborne noise from the housing interior. The acoustic duct may be closed by a fluid-tight and airborne noise-permeable membrane. Further, the housing may include a porous member disposed within the acoustic duct configured to prevent an ignition breakthrough from the housing interior into an external environment outside of the outer housing part.

Abstract: An electronic circuit arrangement for use in an explosive area may include an electrical signal line, which connects an electrical input connector to an electrical output connector, and an electrical earth line, which can be or is electrically connected to the electrical signal line by at least one electrical earthing line. An inductive component and a semiconductor switch may be arranged in the at least one earthing line. The semiconductor switch may be switched between a closed state, in which the signal line is electrically connected via the at least one earthing line to the earth line, and an open state, in which this electrical connection is interrupted.

Abstract: A device arrangement may include an electronic device at least partially enclosed in a device casing. A casing may at least partially delimit a casing interior. The device casing may be disposed in the casing interior. A pressure reduction device may be arranged in the device casing and be configured to reduce a gas pressure of an ignitable gas mixture disposed in at least one of the casing and the device casing. The pressure reduction device may include at least one damping element and a stabilizing device at least partially encasing the at least one damping element.

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.

Abstract: A device arrangement may include an electronic device at least partially enclosed in a device casing. A casing may at least partially delimit a casing interior. The device casing may be disposed in the casing interior. A pressure reduction device may be arranged in the device casing and be configured to reduce a gas pressure of an ignitable gas mixture disposed in at least one of the casing and the device casing. The pressure reduction device may include at least one damping element and a stabilizing device at least partially encasing the at least one damping element.

Abstract: A device arrangement may include an electronic device having a display. A cover may be secured on the display. The cover may include a first transparent cover element and a second transparent cover element. A transparent liquid may be disposed in a sandwich-like manner between the first cover element and the second cover element.

Abstract: An electronic circuit arrangement for use in an explosive area may include an electrical signal line, which connects an electrical input connector to an electrical output connector, and an electrical earth line, which can be or is electrically connected to the electrical signal line by at least one electrical earthing line. An inductive component and a semiconductor switch may be arranged in the at least one earthing line. The semiconductor switch may be switched between a closed state, in which the signal line is electrically connected via the at least one earthing line to the earth line, and an open state, in which this electrical connection is interrupted.