Abstract: A proximity switch having a coil former (3) which is fitted with at least one coil (4, 5, 6), has an associated board (8) and is held by a plastic housing (1), and having an electrically conductive shield (2) between the coil former (3) and the inner wall of the plastic housing (1), with the shield (2) making electrically conductive contact with a circuit (9) which is mounted on the board (8), wherein the shield (2) is formed by an electrically conductive inner wall coating on the plastic housing (1).

Abstract: A proximity switch having a coil former (3) which is fitted with at least one coil (4, 5, 6), has an associated board (8) and is held by a plastic housing (1), and having an electrically conductive shield (2) between the coil former (3) and the inner wall of the plastic housing (1), with the shield (2) making electrically conductive contact with a circuit (9) which is mounted on the board (8), wherein the shield (2) is formed by an electrically conductive inner wall coating on the plastic housing (1).

Abstract: Proximity switch which is encapsulated in a plastics housing and has a coil, which is supported by a coil former (2), and a plate which bears the coil former (2), wherein the, particularly exposed, coil is shielded by a metal-coated or metallic nonwoven, woven fabric or metallized film or foil.

Abstract: In an electronic switch, preferably operating with zero contact, an electronic load switch (3) is controlled by a sensor stage (1), with the switching elements being located in an IC circuit (200) between sensor stage (1) and load switch (3), said circuit (200) containing an inverter stage (7) which, when switched on and off, changes the operating mode of the switch from that of a "closer" to that of an "opener." To reduce the number of IC contacts required for this purpose, provision is made such that switch input (10) for turning on inverter stage (7) is connected inside the IC to IC output (27) of second driver stage (12) and that this IC output (27) is connectable to the operating potential to change the "opener" or "closer" operating mode through an IC-external short-circuit jumper (28).

Abstract: An electronic switch includes a sensor for sensing external conditions and an integrated circuit for evaluating the sensor signal from the sensor. The integrated circuit has a short circuit interrogation device and delivers a signal indicating the switch state of a load switch to an IC output. The integrated circuit transmits a short circuit signal indicating a short circuit to a short circuit display LED. The short circuit display LED is directly connected to another IC output terminal to display the short circuit so that an integrated circuit can operationally be switched between three LED displays for a switch state, a short circuit and a operation.