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106 results about "BNC connector" patented technology

The BNC (Bayonet Neill–Concelman) connector is a miniature quick connect/disconnect radio frequency connector used for coaxial cable.

Online inspection method of three-phase cross interconnected electric cable intermediate head partial discharge

ActiveCN102981106APower supply has no effectPower supply impactTesting dielectric strengthInterconnectionThree-phase
The invention relates to an online inspection method of three-phase cross interconnected electric cable intermediate head partial discharge. The online inspection method of the three-phase cross interconnected electric cable intermediate head partial discharge comprises the following steps of (1) connecting three capacitive sensors with bolts, (2) connecting the three capacitive sensors with cable cores, (3) connecting the cable cores with detecting impedance, (4) connecting three pieces of detecting impedance and the outer skin of sensor electric cables and connecting the three pieces of detecting impedance and the outer skin of the sensor electric cables with the ground, (5) connecting the three pieces of detecting impedance with protective gaps in parallel, (6) connecting the detecting impedance with bayonet nut connectors (BNC), (7) connecting the BNC connectors with a oscilloscope, and (8) judging whether the electric cables have partial discharge through the oscilloscope. The online inspection method of the three-phase cross interconnected electric cables intermediate head partial discharge has the advantages of being used in detection when the electric cables run online, free from influences on power supply of a circuit, enabling the capacitive sensors and the detecting impedance to be installed in a interconnection box, only three measuring electric cables to be led out of the BNC connectors on the outer wall of the interconnection box in measurement and the measurement to be convenient, being safe and reliable, enabling a user to observe graphic information of detection signals directly through the oscilloscope and being capable of judging whether the electric cables have the partial discharge.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Electromagnetic ultrasonic probe

The invention relates to an electromagnetic ultrasonic probe which is characterized by comprising a preposition amplifying module, an isolating layer, a shell, a receiving coil and a permanent magnetic device; the top face of the shell is provided with a poking switch, a power line interface and a BNC connector, the inner side of the bottom face of the shell is provided with the isolating layer, the centers of the two side faces of the shell are provided with holes respectively, the preposition amplifying module is located in the shell and fixed to the inner side of the top face of the shell through a screw, and the receiving coil is pasted to the isolation layer; the receiving coil is connected with the input end of the preposition amplifying module through a signal line, the output end of the preposition amplifying module is connected with the BNC connector fixed to the shell, the poking switch controls the gear position of the preposition amplifying module, and the power line connector is connected with an external power source; the permanent magnetic device comprises a permanent magnetic body, a first curved magnetic boot, a second curved magnetic boot, a cross coupling and a mechanical knob, a permanent magnetic device is located between the two curved magnetic boots, and the middle of the permanent magnetic body is provided with a cross hole groove.
Owner:HEBEI UNIV OF TECH

Cable calibration instrument and calibration method thereof

The invention relates to a cable calibration instrument. The cable calibration instrument comprises a signal transmitting end module, a signal receiving end module, a DDF distribution frame and transmission equipment and is characterized in that the signal transmitting end module comprises a network cable testing signal instrument transmitting end and a BNC connector fixing module; the BNC connector fixing module comprises a transmitting end plug, a transmitting end network cable, a plastic shell and a plurality of BNC connectors fixed on the plastic shell, one end of the transmitting end network cable is connected with the plug, the other end of the transmitting end network cable is connected with the BNC connectors, the transmitting end plug is inserted into a network cable testing signal instrument, and the transmission equipment is an SCI carrier socket; the signal receiving end module comprises a connector module and a network cable testing signal instrument receiving end; the connector module comprises a 34pin connector, a receiving end network cable and a receiving end plug; one end of the receiving end network cable is connected with the plug, the other end of the receivingend network cable is connected with the 34pin connector, and the transmission equipment is inserted into the 34pin connector. The cable calibration instrument is many in testing items, fast and safein testing, incapable of damaging the 2M cables, the BNC connectors and the SCI carrier socket, simple to manufacture, portable, convenient to operate and high in efficiency.
Owner:中铁建电气化局集团南方工程有限公司
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