64results about How to "Shorten the current path" patented technology

An electrical contact for connecting a chip module to a print circuit board, the electrical contact comprises a main body, an upper elastic arm and a lower mounting arm extending upwardly from the main body, and a lower elastic arm and a lower mounting arm extending downwardly from the main body. The upper mounting arm is disposed at the downside of the upper elastic arm and forms a space therebetween; the lower mounting arm is disposed at the downside of the lower elastic arm and forms a space therebetween. The upper elastic arm and the lower elastic arm are respectively deformed by the chip module and print circuit board to resist to the upper mounting arm and lower mounting arm, thereby shortening the current path between the chip module and the print circuit board for improving the high frequency performance of an electrical connector.

The invention discloses an electromagnetic compatibility device for a spark light source of a photoelectric direct-reading spectrometer.The electromagnetic compatibility device comprises a low voltage controlling module, a high voltage generating module, a power module and a voltage isolating module; both the low voltage controlling module and the power module are arranged in a spark light source box; both the high voltage generating module and the voltage isolating module are arranged in a Faraday cage; the Faraday cage is integrated with an exciting platform; a connecting wire for the low voltage controlling module and the high pressure generating module between the Faraday cage and the spark light source box and a connecting wire for the voltage isolating module and the power module are arranged in a shielding mechanism; the exciting platform is connected with the power module through a return cable; the spark light source box and the return cable are grounded; the power module, the low voltage controlling module, the high voltage generating module and the exciting platform are connected with a reference ground in a power supply. According to the electromagnetic compatibility device for a spark light source of a photoelectric direct-reading spectrometer, a current path of a high voltage loop is reduced and electromagnetic interference amplitude is reduced, thereby foundationally solving electromagnetic interference.

The invention discloses a double-edge lead correction strengthening comparator and an active full-bridge rectifier of the double-edge lead correction strengthening comparator. A pre-amplifier of the double-edge lead correction strengthening comparator comprises a bias current circuit and a common gate amplifying circuit; the bias current circuit is used for providing current polarization for the common gate amplifying circuit; the common gate amplifying circuit is used for amplifying an input voltage and generating quasi digital output; an imbalance generation circuit is used for generating different imbalance voltages in an imbalance current mode, and lead comparison is carried out on a rising edge and a falling edge of the comparator; a double-edge digital latch is used for latching output results of the comparator; a driving stage is used for amplifying output signals of the double-edge digital latch; a feedback control circuit is used for reducing a direct current bias current to improve the efficiency of the rectifier. By means of the double-edge lead correction strengthening comparator and the active full-bridge rectifier, the stability of the double-edge correction comparator is achieved through the double-edge digital latch and feedback control method, quiescent dissipation of the double-edge correction comparator is optimized, and the aim of improving the efficiency of the active rectifier is achieved.