2 results about "Electromagnetic noise" patented technology

The invention provides a pneumatic engaging and disengaging device for an overhead cigarette carton conveying line. The pneumatic engaging and disengaging device is sleeved on a main shaft through a steel sleeve, and comprises a plastic annular cylinder, a plastic movable gear and a plastic fixed gear, wherein the plastic annular cylinder is assembled on the steel sleeve through a big cylinder bearing and a small cylinder bearing; a plastic chain wheel is assembled on the steel sleeve through a chain wheel bearing; the plastic fixed gear is assembled on the plastic chain wheel and positioned on one side of the plastic annular cylinder; the plastic movable gear is positioned in the plastic fixed gear and contacted with the big cylinder bearing; a spring is positioned in the plastic movable gear and connected with one end of a spring head; the other end of the spring head is pressed against the chain wheel bearing; a forward buffer device is positioned in the plastic chain wheel; and a backward buffer device is positioned in the plastic fixed gear. By adopting a pure mechanical mode, the device has the advantages of high transfer force of single-way engagement and disengagement, high torque, no electromagnetic noise, no need of electric wire, no influence of current and voltage and capability of improving weather resistance, stability and greatly prolonging service life.

The embodiment of the invention discloses a filter circuit and vehicle-mounted electronic equipment applied to the field of circuits. According to the embodiment of the invention, the filter circuit comprises a noise reduction device. When the current flows through the connection point of the noise reduction device and the common-mode inductor, the current of a part of frequency bands in the current flows through the noise reduction device and then is guided into the ground through the capacitor. Thus, the current flowing through the frequency band of the common-mode inductor is reduced, the resonance between the capacitor and the common-mode inductor is relieved, the electromagnetic noise of the resonance frequency band is reduced, and the signal-to-noise ratio of the output signal is improved.