In a general aspect, a discharge circuit for discharging a voltage from a USB connector pin can include a discharge load configured to discharge the voltage from the pin. The discharge circuit can also include a first control circuit configured to adjust a magnitude of the discharge load during discharging, such that power consumption is less than or equal to a discharge power limit, and a discharge time is less than or equal to a discharge time limit. The discharge circuit can further include a second control circuit configured to detect whether the voltage of the pin is changed based on a first reference voltage during discharging and adjust the magnitude of the discharge load in response to the change in the voltage of the pin, such that a slew rate of the voltage is less than or equal to a slew rate limit.

An active fluid static elimination system installed in a fluid transportation pipeline includes a solenoid valve, an electrostatic measuring device, a fluid destaticizer, and a controller. The solenoid valve is connected to a connecting port of the fluid transportation pipeline, and the electrostatic measuring device is used to measure an electrostatic value of a fluid in the fluid transportation pipeline. The fluid destaticizer is connected to the solenoid valve, and the controller is connected to the electrostatic measuring device and the solenoid valve. The solenoid valve is opened to allow the fluid passing through the fluid destaticizer to eliminate the electrostatic charge of the fluid when the controller determines that the electrostatic value measured by the electrostatic measuring device is greater than a predetermined value.

An active fluid static elimination system installed in a fluid transportation pipeline includes a solenoid valve, an electrostatic measuring device, a fluid destaticizer, and a controller. The solenoid valve is connected to a connecting port of the fluid transportation pipeline, and the electrostatic measuring device is used to measure an electrostatic value of a fluid in the fluid transportation pipeline. The fluid destaticizer is connected to the solenoid valve, and the controller is connected to the electrostatic measuring device and the solenoid valve. The solenoid valve is opened to allow the fluid passing through the fluid destaticizer to eliminate the electrostatic charge of the fluid when the controller determines that the electrostatic value measured by the electrostatic measuring device is greater than a predetermined value.

A fluid destaticizer includes a valve main body, a one-way check valve, a discharge vessel, and an electrostatic discharger. The one-way check valve is installed in the valve main body, the discharge vessel is provided in the valve main body, and the discharge vessel is connected to the one-way check valve. In addition, the discharge vessel includes a sidewall, and the electrostatic discharger is installed on the sidewall of the discharge vessel to discharge the electrostatic charge in the fluid and the fluid is exhausted from the valve main body through the discharge vessel.

A protection structure includes a substrate, a signal wire pattern, a protective ring and micro-blocks. The substrate has a touch sensing pattern including sensing strings. The signal wire pattern has conductive wires. Each conductive wire electrically connects one of the sensing strings to a signal processor. The protective ring is formed at a peripheral zone of the substrate and around the touch sensing pattern. The micro-blocks are disposed in the protective ring and have electric conductivity. A gap is disposed between every adjacent two of the micro-blocks for insulation.

Disclosed is a cascade insert for an ionising bar for the contactless neutralising of electrostatic charges and/or for contactless charging, in particular of insulation materials. The cascade insert includes a housing having at least one cascade circuit which has at least one transformer and a one- or multiple-stage cascade unit, said circuit units being potted with a potting material, and the output of the cascade circuit is coupled capacitively, inductively or resistively with a plurality of electrode points which are accommodated in a carrier extending in the direction of extension of the housing.

An endoscope includes: an internal conductor that is formed of a conductive material; an external conductor that is electrically insulated from the internal conductor and is formed of a conductive material that configures a part of an exterior; a holder that holds a first conductor that is electrically connected to the internal conductor and a second conductor that is electrically connected to the external conductor such that the first conductor and the second conductor are separated from each other by a space with a predetermined spatial distance; and a water-tightness holding member that holds water-tightness in the space.

An endoscope includes: an internal conductor that is formed of a conductive material; an external conductor that is electrically insulated from the internal conductor and is formed of a conductive material that configures a part of an exterior; a holder that holds a first conductor that is electrically connected to the internal conductor and a second conductor that is electrically connected to the external conductor such that the first conductor and the second conductor are separated from each other by a space with a predetermined spatial distance; and a water-tightness holding member that holds water-tightness in the space.

A port processing method, used to enhance an electrostatic discharge protection capability and an overstress protection capability. The method comprises: step S1, providing a cable having a plurality of terminal contact cores leading out of the cable, the plurality of terminal contact cores comprising contact cores disposed at two sides of the cable, and signal cores disposed within the cable; and S2, changing the signal layout of the contact cores and the signal cores, so as to enhance the electrostatic discharge protection capability and the overstress protection capability. The method for changing the signal layout comprises: using the contact cores as a signal ground, and disposing a contact spring plate at a middle portion of each of the contact cores and each of the signal cores; and extending lengths of the contact cores outward.

A wavelength conversion device that restrains output power of light when a temperature of a wavelength conversion element, including a ferroelectric substrate, is changed. The wavelength conversion device includes, in a casing, the wavelength conversion element, a temperature control element that controls a temperature of the wavelength conversion element, a static elimination mechanism, and a surface potential measurement mechanism, and eliminates static electricity by driving the static elimination mechanism when the surface potential measurement mechanism detects a change in surface potential of the wavelength conversion element.