A system for automatically controlling power supply to a lamp (101) of a vehicle, the system comprising: a detection module (20) to detect whether the vehicle is stationary or non-stationary; a controller (102) to receive a signal (25) having a first value transmitted by the detection module (20) wh.....
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Rotary piston machine has a rotating piston attached to a motor shaft, with chambers in a cylindrical housing, equipped with a cylindrical bore in which the rotary piston works, the inside surface of the bore cylinder being divided equidistant from some drawers that slide in the guiding windows of t.....
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A method of controlling the state of polarization of an optical signal includes injecting the optical signal into a laser diode and matching the wavelength of the optical signal to a longitudinal mode of the laser diode. A stabilizer signal can also be injected in to the laser diode. The wavelength .....
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Magnetic ink system, without a strong spring
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