A power tool with a combined printed circuit board (PCB) that reduces internal wiring of the power tool and provides a large amount of air flow to internal components. In some instances, the combined PCB has a surfboard shape and includes a motor control unit and power switching elements (Field Effect Transistors or FETs). The combined surfboard PCB is located above the trigger, but below the motor and drive mechanism. In other instances, the combined PCB has a doughnut shape and is located coaxially with a motor shaft. The combined PCB may be positioned between a doughnut-shaped control PCB and the motor.

A power converter module includes a multilayer printed circuit board, a switching device, a capacitor device, a first via, a second via, a third via and a fourth via. The multilayer printed circuit board has a first surface and a second surface and includes a plurality of copper layers including a plurality of positive copper layers and negative copper layers. The plurality of positive copper layers and the negative copper layers are disposed in staggered arrangement. The switching device is disposed on the first surface and includes a switching positive terminal and a switching negative terminal. The capacitor device is disposed on the first surface and includes a capacitor positive terminal and a capacitor negative terminal, and the capacitor device forms a capacitor area. The projections of the adjacent positive and negative copper layers and the capacitor area on the first surface at least partially overlap with each other.

In a first aspect of the present disclosure, a push switch includes a substrate including a first electrode and a second electrode that are arranged on an upper surface of the substrate; a resilient member arranged on the first electrode over the second electrode of the substrate; and a light-transmitting member including a crosslinked product of a chain olefin-cyclic olefin copolymer. The light-transmitting member covers the resilient member from above and includes an upper surface, a lower surface, a peripheral side surface between edges of the upper surface and edges of the lower surface of the light-transmitting member, and a periphery of the lower surface of the light-transmitting member. The periphery may be fixed on the substrate.

The invention relates to an automation module for building automation, which is designed to be installed in a wall of a house as an at least partially concealed installation. The automation module comprises a high voltage region (6) and a low voltage region (4). It additionally comprises an insulation region (5) for separating said high (6) and low (4) voltage regions, a first circuit board (41, 41′) having at least one input interface (411, 414), a second circuit board (42) having at least one control unit (422), and a third circuit board (61) having at least one switching element (611). Said first, second and third circuit boards (41, 41′; 42, 61) and the insulation region (5) are arranged one above the other in layers.

A field device (1) includes an electronic circuit (200) connected to at least one of a sensor (600) and an actuator, a bimetal temperature switch (400) connected to a power source (100) in series with the electronic circuit (200) and configured to turn on when rising to a first temperature, a heating element (500) connectable to the power source (100) in parallel with the electronic circuit (200) and the temperature switch (400), and a housing (300) configured to house the electronic circuit (200), the temperature switch (400), and the heating element (500).

A solid state switching device, such as a solid state circuit breaker, includes at least one heat sink, a control electronics printed circuit board (PCB), and power electronics. The power electronics are useful to regulate the flow of current from one terminal of the solid state switching device to another terminal. The power electronics can include one or more solid state devices such as FETs, Thyristors, Thyristors+SiC JFET in parallel, IGBTs, and IGCTs. The control PCB can include a variety of circuit elements useful to perform the function of a gate driver useful to activate the solid state device of the power electronics. The control electronics can be positioned laterally to the power electronics and spanning from a heat sink positioned on one side of the power electronics to a heat sink positioned on an opposing side of the power electronics.

A power module for operating an electric vehicle drive, comprising power switches for generating an output current based on an input current; control electronics for controlling the power switches including a first region, to which a first electric potential is applied, and a second region, to which a second electric potential is applied, wherein the second electric potential is higher than the first electric potential; a heatsink for discharging heat generated by the power switches and the control electronics; a shielding layer for electrically shielding the control electronics placed between the heatsink and the control electronics, such that the control electronics lies on the shielding layer, and the shielding layer lies on the heatsink; wherein the shielding layer is designed to connect the heatsink thermally and electrically to the first region, and thermally to the second region, and electrically insulate it therefrom.

Embodiments herein describe a capillary containing a eutectic conductive liquid (e.g., EGaIn) and an electrolyte (e.g., NaOH) that is integrated into a printed circuit board (PCB). In one embodiment, the capillary is formed in a through-hole in the PCB and has negative and positive electrodes at its respective ends to seal the eutectic conductive liquid and the electrolyte. The capillary further includes one or more electrodes that extend through a side of the portion of the capillary containing the liquids. The wiper electrodes also make electrical contact with respective conductive layers in the PCB. Using a DC voltage between the negative and positive electrodes, the eutectic conductive liquid forms electrical connections between the wiper electrodes, which in turn, forms electrical connections between the conductive layers in the PCB.

A high-frequency module includes an antenna terminal, a transmission signal terminal, a reception signal terminal, a plurality of earth terminals, a switch, a transmission filter, a reception filter, and a multilayer board. The multilayer board includes a ground electrode arranged between the transmission filter and the reception filter. The plurality of earth terminals include a first earth terminal and a second earth terminal. When the high-frequency module is viewed in a direction perpendicular to a principal surface of the multilayer board, the reception signal terminal is provided between the antenna terminal and the transmission signal terminal, the first earth terminal is provided between the antenna terminal and the reception signal terminal, and the second earth terminal is provided between the reception signal terminal and the transmission signal terminal.

A temperature-dependent switch includes a housing with a top face and an outer face that runs transversely to the top face. The switch includes a first outer contact area that is arranged on the top face. The switch includes a second outer contact area that is arranged at the housing. The switch includes a temperature-dependent switching mechanism that is arranged in the housing and configured to establish or open an electrically conductive connection between the first and the second outer contact area depending on a temperature of the switching mechanism. The housing is disposed in a metal mounting cap that includes a wall. An upper rim of the wall protrudes beyond the top face of the housing. An inner side of the wall bears at least partially against the outer face of the housing.