45results about How to "Wide resistance range" patented technology

The invention discloses a resistive sensor array fast readout circuit based on a two-wire system isopotential method, and belongs to the sensor technology field. By aiming at an M*N two-dimensional resistive sensor array sharing row lines and column lines, the fast readout circuit comprises a column multiplexer; a reference voltage source; M current feedback operational amplifiers and M testing current sample resistors, which are respectively corresponding to M row lines of the resistive sensor array; N column line driving operational amplifiers, which are respectively corresponding to N column lines of the resistive sensor array; and connecting wires. Each row line and each column line of the resistive sensor array are respectively provided with two connecting wires. The invention also discloses a readout method of the above mentioned fast readout circuit and a sensing system. Compared to the prior art, by adopting the two-wire system isopotential method as the key technology, the measurement errors generated by the connecting cable lead resistance, the cable joint contact resistance, and multi-way switch channel conduction resistance can be effectively eliminated, and therefore the measurement accuracy of the resistive sensor array can be greatly improved.

The invention discloses a low voltage arm shield integrated resistor for a high voltage pulse voltage divider. The low voltage arm shield integrated resistor is characterized in that an upper end cap and a lower end cap are respectively embedded in a resistor body, a middle conductor conducted with the lower end cap penetrates through the inner hole of the resistor body and the inner hole of the upper end cap so as to be connected and conducted with a leading-out terminal, a ground terminal, a shielding case and the upper end cap are fixed, connected and conducted by fixed screws, an inner sealing gasket and an outer sealing gasket are respectively arranged on the upper surface and the lower surface of a panel, a leading-in conductor penetrates through the panel and the lower end cap and is connected and conducted by screw threads, and the shielding case and the panel are fixed and fastened by a bolt. The low voltage arm shield integrated resistor has wide value of resistance, strong overload capacity, large impulse power, large impulse current, fast impulse response, and high work efficiency, has small attenuation for high-frequency impulse signal, low signal distortion factor, and strong antijamming capability, can be used in resistance-type high voltage pulse voltage divider on ultrahigh frequency pulse high voltage equipment and also can be used as an independent loading or current-limiting resistor in ultrahigh frequency pulse high voltage equipment; and as the input interface and the output interface are standard interfaces, the low voltage arm shield integrated resistor is convenient to use and maintain.