Abstract: The present disclosure teaches a photolithography plate and a mask correction method, and relates to the field of semiconductor technologies. In forms of the mask correction method, a patterned mask is formed on a substrate, a location of a scattering bar embedded in the substrate is determined according to the mask, and an opening is formed at the determined location so as to embed the scattering bar in the opening. A scattering bar is embedded in a substrate of a photolithography plate so as to effectively avoid the impact of the scattering bar on a mask pattern, reduce a deposition loss, improve the correction effect, and shorten a correction time.

Abstract: A breathing system for an anesthesia machine is provided, which comprises an operation mode switch, a CO2 canister, a bellows, a patient inspiratory branch and a patient expiratory branch. The operation mode switch comprises a vent communicating with the patient inspiratory branch, a vent communicating with the patient expiratory branch, a vent communicating with the bellows, and a vent communicating with the CO2 canister. The CO2 canister is positioned below the operation mode switch, so as to collect the water flowing through the operation mode switch.

Abstract: A method for manufacturing a permanent-magnet motor rotor includes manufacturing a rotary shaft, a permanent magnet, a front end cover, a rear end cover, and a magnetic yoke unit, where the magnetic yoke unit contains multiple pole shoe parts and one iron core part, where each pole shoe part and the iron core part are connected therebetween via a connecting strip; manufacturing a rotor spacer; all positioning holes of the magnetic yoke unit correspond to the permanent-magnet through hole of the rotor spacer to form a permanent-magnet passage; inserting the permanent magnet into the permanent-magnet passage; inserting tightening bolts; cutting off the mid-section of each connecting strip, overlapping the pole shoe parts to form a rotor pole shoe, overlapping the iron core parts to form a rotor iron core; and arranging respectively the front end cover and the rear end cover on a front end and a rear end.

Abstract: Provided are a method and device for pushing social network information. According to the method, after a login authority to a social network is obtained, instant information within a current dynamic pull time length is acquired from the social website according to the current dynamic pull time length and then is pushed; time record information of latest first preset threshold pieces of information including the instant information is acquired from records of the social network, and an average pull time length for the social website to correspondingly push second preset threshold pieces of information is calculated; the calculated average pull time length is set as the dynamic pull time length for the social website to perform a next round of information pushing. A device corresponding to the method is also provided. Information can be pushed in real time and reasonably, and network resources and terminal electricity can be saved.

Abstract: The present invention relates to a device for mounting a breathing circuit in an anaesthesia machine. The device comprises: a baffle, which is arranged above the breathing circuit; a hanging member, which is arranged on the baffle and the breathing circuit, for hanging the breathing circuit onto the baffle; and a locking member, which is arranged on the breathing circuit or on the baffle, for locking the breathing circuit below the baffle, when the breathing circuit is hung in place.

Abstract: A method for manufacturing a permanent-magnet motor rotor includes manufacturing a rotary shaft, a permanent magnet, a front end cover, a rear end cover, and a magnetic yoke unit, where the magnetic yoke unit contains multiple pole shoe parts and one iron core part, where each pole shoe part and the iron core part are connected therebetween via a connecting strip; manufacturing a rotor spacer all positioning holes of the magnetic yoke unit correspond to the permanent-magnet through hole of the rotor spacer to form a permanent-magnet passage; inserting the permanent magnet into the permanent-magnet passage; inserting tightening bolts cutting off the mid-section of each connecting strip, overlapping the pole shoe parts to form a rotor pole shoe, overlapping the iron core parts to form a rotor iron core; and arranging respectively the front end cover and the rear end cover on a front end and a rear end.

Abstract: A circuit including a first circuit, a second circuit, and a calibration circuit. The first circuit is configured to generate a first reference voltage potential. The second circuit is configured to generate a second reference voltage potential based on a calibration signal. The calibration circuit is configured to generate the calibration signal, to adjust the second reference voltage potential, based on the first reference voltage potential and the second reference voltage potential. The calibration circuit includes a comparing circuit configured to compare the first reference voltage potential and the second reference voltage potential, and a counter configured to increment a counter value based on the comparison of the first reference voltage potential and the second reference voltage potential and generate the calibration signal based on the counter value.

Abstract: A system includes a device configured to operate in a first mode and a second mode. The device includes a first circuit configured to receive a first band gap voltage potential from a first band gap circuit when the device is operating in the first mode, and a second circuit configured to receive a second band gap voltage potential from a second band gap circuit when the device is operating in the second mode. The device is configured to generate a mode select signal to selectively turn on and off the first band gap circuit and the second band gap circuit. A calibration circuit is configured to compare the second band gap voltage potential to the first band gap voltage potential, output a calibration signal to the second band gap circuit to adjust the second band gap voltage potential based on the comparison, and turn off the first band gap circuit in response to the second band gap voltage potential being within a predetermined range of the first band gap voltage potential.

Abstract: A voltage converter includes, among other things, an amplifier, a voltage combiner, and a hysteretic comparator. The amplifier has a first input terminal which receives a first voltage representative of an output voltage of the voltage converter, a second input terminal which receives a first reference voltage, and an output terminal which generates a second voltage proportional to a difference between the first voltage and the first reference voltage. The voltage combiner combines the second voltage with a second reference voltage to generate a combined voltage. The comparator causes a third voltage to decrease if a feedback voltage defined by the third voltage is detected by the comparator as being greater than a first threshold voltage defined by the combined voltage, and further to cause the third voltage to increase if the feedback voltage is detected by the comparator as being less than the first threshold. The third voltage is applied to a first terminal of a load external to the voltage converter.

Abstract: A duty cycle estimator comprises an error generator that compares an output of a switching regulator to a reference to generate an output error, wherein the switching regulator operates in accordance with a switching period. An accumulator determines an accumulated error of the output error over a time period of at least N times the switching period of the switching regulator, where N is an integer. An adjustment determiner adjusts a duty cycle for the switching regulator based on the accumulated error of the output error over the time period.

Abstract: A band gap voltage reference circuit includes a first band gap circuit configured to generate a first band gap voltage potential. A second band gap circuit includes a variable resistance. The second band gap circuit is configured to output a second band gap voltage potential based on a value of the variable resistance. A calibration circuit is configured to adjust the variable resistance of the second band gap circuit based on the first band gap voltage potential and the second band gap voltage potential. The first band gap circuit is shut down in response to the second band gap voltage potential being within a predetermined range of the first band gap voltage potential.

Abstract: A controller comprises a duty cycle estimator to determine a nominal duty cycle. An adjustment determiner determines an adjustment value to combine with the nominal duty cycle to generate an adjusted duty cycle. A pulse width adjuster varies a pulse width signal based on the adjusted duty cycle. Transfer of energy between an input and a regulated output is based on the pulse width signal.

Abstract: A band gap voltage reference circuit includes a first band gap circuit configured to generate a first band gap voltage potential. A second band gap circuit includes a variable resistance. The second band gap circuit is configured to output a second band gap voltage potential based on a value of the variable resistance. A calibration circuit is configured to adjust the variable resistance of the second band gap circuit based on the first band gap voltage potential and the second band gap voltage potential. The first band gap circuit is shut down in response to the second band gap voltage potential being within a predetermined range of the first band gap voltage potential.

Abstract: A method of reducing switching losses in a switch array for an output regulator, the switch array to convert energy from an input source to a regulated output of the output regulator, the switch array including at least two power switches, includes determining an expected current flowing through the switch array during a next switching cycle, at a sampling rate, determining expected power losses of the switch array based on the expected current, determining a combination of the power switches to enable that minimizes the expected power losses, and enabling the combination of power switches.

Abstract: A method of sensing current comprises providing a current sensor having a gain resolution; setting the gain resolution of the current sensor to an initial resolution; sensing current flowing through the current sensor; evaluating an amplitude of the current; and changing the gain resolution of the current sensor based on the evaluating.

Abstract: A band gap voltage reference circuit comprises a first band gap (BG) circuit that generates a first BG voltage potential. A second BG circuit includes a variable resistance and outputs a second BG voltage potential that is related to a value of said variable resistance. A calibration circuit communicates with said first and second BG circuits, adjusts said variable resistance based on said first BG voltage potential and said second BG voltage potential, and selectively shuts down said first BG circuit.

Abstract: A voltage converter includes, among other things, an amplifier, a voltage combiner, and a hysteretic comparator. The amplifier has a first input terminal which receives a first voltage representative of an output voltage of the voltage converter, a second input terminal which receives a first reference voltage, and an output terminal which generates a second voltage proportional to a difference between the first voltage and the first reference voltage. The voltage combiner combines the second voltage with a second reference voltage to generate a combined voltage. The comparator causes a third voltage to decrease if a feedback voltage defined by the third voltage is detected by the comparator as being greater than a first threshold voltage defined by the combined voltage, and further to cause the third voltage to increase if the feedback voltage is detected by the comparator as being less than the first threshold. The third voltage is applied to a first terminal of a load external to the voltage converter.