Abstract: A measurement circuit is provided. The measurement circuit includes an array including a plurality of test unit circuits arranged in rows and columns, a plurality of first test lines, a plurality of address lines and a control circuit connected to the plurality of address lines. Each test unit circuit includes a device under test, a resistor coupled in series with the device under test between an input terminal and an intermediate node, a first switch coupled between the intermediate node and a node of a reference voltage, and a second switch coupled between the intermediate node and an output terminal. Each first test line is connected to the first switches of the test unit circuits in a corresponding column of the array. Each address line is connected to the second switches of the test unit circuits in a corresponding row of the array.

Abstract: A measurement circuit is provided. The measurement circuit includes an array including a plurality of test units arranged in rows and columns. Each test unit includes a device under test, a first control circuit and a second control circuit. The first control circuit is operable in the first power domain corresponding to a first high power supply voltage and a first low power supply voltage and is connected to a first terminal of the device under test. The second control circuit is operable in the second power domain corresponding to a second high power supply voltage and a second low power supply voltage and is connected to a second terminal of the device under test. The first low power supply voltage is equal to or greater than the second high power supply voltage.

Abstract: An ESD protection circuit includes a buffer circuit, a driving circuit, and a power-clamping circuit. The buffer circuit includes first and second transistors having a first conductivity type coupled in a cascade configuration between a first node and a first power supply node. A bonding pad is coupled to the first node. The drive circuit determines a state of at least one of the first and second transistors according to a control voltage. The drive circuit includes a third transistor having a second conductivity type, which is coupled between a second power supply node and a gate of the first transistor and is controlled by the control signal. The power-clamping circuit is coupled to the bonding pad and a gate of the third transistor at a second node. The control voltage is generated at the second node and determined by a voltage at the bonding pad.

Abstract: The present invention discloses a high temperature resistant outer layer covering aerogel composite material with low dielectric, high heat insulation and high fireproof characteristics and preparation method thereof. The method comprises steps of: (1) mixing hydrolysis, (2) condensation and dispersion, (3) structure molding, (4) atmospheric pressure drying, (5) outer layer covering, (6) curing molding and (7) surface treatment. In this technology, a trace amount of water-dispersible high temperature resistant glue is added to the aerogel sol in the step of condensation and dispersion, which is injected into the fiber-containing preformed structure, and dried at high temperature and atmospheric to prepare aerogel preformed materials. And then, the aerogel preformed materials are wrapped by a high temperature resistant material and cured to prepare the aerogel composite material with low dielectric, high heat insulation and high fireproof properties.

Abstract: The present invention discloses a high temperature resistant outer layer covering aerogel composite material with low dielectric, high heat insulation and high fireproof characteristics and preparation method thereof. The method comprises steps of: (1) mixing hydrolysis, (2) condensation and dispersion, (3) structure molding, (4) atmospheric pressure drying, (5) outer layer covering, (6) curing molding and (7) surface treatment. In this technology, a trace amount of water-dispersible high temperature resistant glue is added to the aerogel sol in the step of condensation and dispersion, which is injected into the fiber-containing preformed structure, and dried at high temperature and atmospheric to prepare aerogel preformed materials. And then, the aerogel preformed materials are wrapped by a high temperature resistant material and cured to prepare the aerogel composite material with low dielectric, high heat insulation and high fireproof properties.

Abstract: The present invention discloses an aerogel paint with smoke-free, fireproof and high heat insulation properties and preparation method thereof. The method comprises steps of: (1) mixed hydrolysis, (2) condensation and dispersion, (3) atmospheric drying, (4) high-temperature-resistant glue mixing, (5) homogenizing and dispersing. In this technology, the aerogel particles can be prepared by condensation under suspension and dispersion, and the aerogel particles have more uniform particle sizes. After being dried with hot air on an atmospheric condition, the aerogel paint is then prepared by mixing a high-temperature-resistant glue solution with the dried aerogel particles to obtain an aerogel paint being smoke-free, toxic-free, highly fire-proof and highly heat insulative. The products developed in the present invention withstand impact of high-temperature flames more than 1200° C. for a long time, and remain unpenetrated of the aluminum plate.

Abstract: An ESD protection circuit includes a buffer circuit, a driving circuit, and a power-clamping circuit. The buffer circuit includes first and second transistors having a first conductivity type coupled in a cascade configuration between a first node and a first power supply node. A bonding pad is coupled to the first node. The drive circuit determines a state of at least one of the first and second transistors according to a control voltage. The drive circuit includes a third transistor having a second conductivity type, which is coupled between a second power supply node and a gate of the first transistor and is controlled by the control signal. The power-clamping circuit is coupled to the bonding pad and a gate of the third transistor at a second node. The control voltage is generated at the second node and determined by a voltage at the bonding pad.

Abstract: A voltage regulation circuit is suitable to provide an output voltage to a core circuit. The voltage regulation circuit includes a pad, a pull-low unit, a first controlling unit, a second controlling unit and a voltage regulation circuit. The pad receives and provides an input voltage. The pull-low unit generates a pull-low voltage according to the input voltage. The first controlling unit generates a first controlling signal according to the input voltage and the pull-low voltage. The second controlling unit generates a second controlling signal according to the input voltage and the first controlling signal. The voltage regulation unit regulates the input voltage according to the first controlling signal and the second controlling signal, so as to generate the output voltage.

Abstract: A compressor pressure measuring device drives a compressor to operate for measuring its pressure. A positive pressure pipeline and a negative pressure pipeline are connected to the entry end and the exit end of the compressor, respectively. The positive pressure pipeline and the negative pressure pipeline are provided with an electromagnetic valve, respectively. A control module controls the operation of the compressor and the on/off of the electromagnetic valves in the positive pressure pipeline and the negative pressure pipeline. This automatically detects positive pressure and negative pressure of the compressor.

Abstract: A compressor leakage detector includes a water tank, an elevator platform, a control panel, and a pressure testing unit. The elevator platform is disposed in the water tank to rise and drop vertically. The operating panel of the control panel has a human-machine interface, indicators, and pressure gauges. The pressure testing unit in the control panel uses an intake pipe to connect to several branch pipes that in turn connect to the compressors in the water tank. Each of the branch pipes connects in series to at least one intake EM valve and at least one exhaust EM valve. A pressure sensor is interposed between the intake EM valve and the corresponding compressor.

Abstract: A compressor pressure measuring device drives a compressor to operate for measuring its pressure. A positive pressure pipeline and a negative pressure pipeline are connected to the entry end and the exit end of the compressor, respectively. The positive pressure pipeline and the negative pressure pipeline are provided with an electromagnetic valve, respectively. A control module controls the operation of the compressor and the on/off of the electromagnetic valves in the positive pressure pipeline and the negative pressure pipeline. This automatically detects positive pressure and negative pressure of the compressor.

Abstract: A compressor cleaner includes a machine body with a tunnel, a transporting unit connected with several conveyors, a driving unit for driving the compressors on the conveyors to rotate dining the cycle. The conveyors are driven by the transporting unit to enter an entry side and to carry compressors. They first enter the cleaning room for cleaning, then the front drying room and the rear drying room for drying. The dried compressor then goes to the exit side.

Abstract: A compressor leakage detector includes a water tank, an elevator platform, a control panel, and a pressure testing unit. The elevator platform is disposed in the water tank to rise and drop vertically. The operating panel of the control panel has a human-machine interface, indicators, and pressure gauges. The pressure testing unit in the control panel uses an intake pipe to connect to several branch pipes that in turn connect to the compressors in the water tank. Each of the branch pipes connects in series to at least one intake EM valve and at least one exhaust EM valve. A pressure sensor is interposed between the intake EM valve and the corresponding compressor.