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PaintTool SAI is a lightweight, yet high quality painting application that has stacks of brushes, pencils, erasers, crayons, and more. You can load and save brushes, and customise their appearance.
PaintTool SAI 1.4 portable with extra brushes setup freeThe present invention relates to a key switch, particularly for remote control of a vehicle, comprising a printed circuit board and a switch member movably mounted on the printed circuit board, which switch member is provided with two switching contacts that are connected to each other by an electrically conducting path that is formed on the printed circuit board.
Key switches for remote control of a vehicle can be divided into mechanical key switches and capacitive key switches. The capacitive key switches comprise a transmitting key and a receiving key mounted so as to be freely movable in the respective terminal end regions of the key. In the terminal region of the transmitting key a transmitting conductor layer is formed, which conductor layer can be made to come into electrical contact with a suitable transmitting element, which is usually a transmitting antenna. Such a transmitting antenna is required because the signal to be transmitted is intended for remote control of the vehicle. The transmitting antenna is usually made of a metal, and can be formed as a wire that is electrically connected to a fixedly mounted receiving element.
For reception of the signal a receiving conductor layer is provided on the receiving key, which receiving conductor layer is connected to the receiving element, which receiving element is also usually formed of a metal and can be arranged in the terminal region of the receiving key.
To transmit the signal and receive the signal respectively, a capacitively acting conductor is provided between the transmitting conductor layer and the receiving conductor layer. For receiving the signal, the receiving conductor layer is coupled to a measuring capacitance by which it is possible to determine the signal.
A key switch having a transmitting key and a receiving key that can be freely moved relative to each other is known from German Patent Specification 3,729,635. Such a key switch has a transmitting conductor layer and a receiving conductor layer that are arranged in each case on the receiving key. The two conductor layers are coupled to one another in their central region via a shaped insulating body. The transmitting key and the receiving key are movably mounted with respect to one another in the two terminal end regions, and can be brought into mutual engagement by way of an ac619d1d87
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