Abstract: A method for controlling a torque output of a DC electric tool, includes presetting torque levels and voltage ranges corresponding to the torque levels, detecting the current output voltage of a battery and determining the voltage range in which the current output voltage is located, determining whether or not the current voltage range matches the preset torque level or not, and if the current voltage range does not match the preset torque level providing a warning that the torque output cannot reach the preset torque level and calculating and displaying a maximum torque level corresponding to the actual torque output value and, if the current voltage range does match the preset torque level, calculating the current actual torque output value and keeping a PWM modulation value constant if the torque output value conforms to the preset torque level or increasing the PWM modulation value for compensation if the torque output value does not conform to the preset torque level.

Abstract: An electric screwdriver includes a motor having a motor shaft, a handle housing for accommodating the motor, an output shaft at least partly protruding from the handle housing, a transmission device for enabling the motor shaft to drive the output shaft to rotate around a first axis, an exploring antenna for detecting whether an object is charged, an operating switch coupled to the handle housing for controlling the motor, a first wire stripping member fixedly mounted to the handle housing; and a second wire stripping member rotatably connected to the handle housing.

Abstract: An example method for controlling an electric motor in an electric tool includes detecting travel of the trigger, selecting a smoothing coefficient N according to travel of the trigger in a predetermined time, driving the electric motor with an output duty ratio which is figured out by a formula in which the smoothing coefficient N is a denominator so as to cause the output duty ratio to be lesser than a preset duty ratio. The methods described will decrease the current impact on electric motors when users pull the trigger.

Abstract: An electric screwdriver includes a motor having a motor shaft, a handle housing for accommodating the motor, an output shaft at least partly protruding from the handle housing, a transmission device for enabling the motor shaft to drive the output shaft to rotate around a first axis, an exploring antenna for detecting whether an object is charged, and an operating switch coupled to the handle housing for controlling the motor. The exploring antenna has a front end portion extending beyond the handle housing. The output shaft has an inserting groove, and a ratio of the maximum size of the handle housing to the maximum size of the inserting groove in a radial direction of the output shaft is greater than or equal to 3.9 and less than or equal to 8.

Abstract: A probe-type connector includes an insulating body having a receiving space and a plugging slot which both communicate with each other, a probe set received in the receiving space and including a probe terminal, an insulating part, and an elastic part, and a connecting plate plugged into the insulating body corresponding to the plugging slot and having a connecting portion. The probe terminal has a connecting segment, and a flexible connecting arm extending from the connecting segment toward the plugging slot. The insulating part is connected between the connecting segment and the elastic part that enables the insulating part and the probe terminal to reciprocate in the receiving space. The flexible connecting arm is electrically connected to the connecting portion. Therefore, the probe terminal can transmit electrical signals directly to the connecting plate, which can be applied to the transmission of high-frequency signals or electrical energy.

Abstract: A micro-nano fluid damper includes a sleeve, a piston assembly and a micro-nano fluid. The sleeve has an accommodating space. The piston assembly has a piston head and at least one piston rod. The piston assembly is movably disposed in the accommodating space. The piston rod extends out of the sleeve from a side of the piston head. The micro-nano fluid is filled between the sleeve and the piston assembly, and the micro-nano fluid flows in the accommodating space by the back-and-forth movement of the piston. When a shear strain rate of the micro-nano fluid is greater than 1s?1, an exponent of velocity of the micro-nano fluid damper is less than 1, and the micro-nano fluid has a shear thinning threshold and a shear thickening threshold.

Abstract: A power plug including an insulation main body is provided. A first pillar and a second pillar arranged at the insulation main body. Only a first channel for inserting a first plug terminal is defined on the first pillar and multiple second channels for inserting second plug terminals are defined on the second pillar. A power receptacle including an insulation base is provided. A first slot and a second slot respectively corresponding to the first pillar and the second pillar are defined at the insulation base. Only a first receptacle terminal is inserted in the first slot. Multiple second receptacle terminals arranged at interval and parallel with each other are inserted in the second slot. The first receptacle terminal and the second receptacle terminals are arranged in a row. The power plug and the power receptacle are thereby limited to correctly couple.

Abstract: An electronic device including a first body, a first connecting assembly, a second body, and a second connecting assembly is provided. The first body has a recess, and the first connecting assembly is disposed at the first body and hidden in the recess. The second connecting assembly is disposed on the second body in protruding manner. The second connecting assembly is fit to be assembled in the recess and electrically connected to the first connecting assembly, such that the first and the second bodies are detachably assembled to each other.

Abstract: DC-DC converter systems are disclosed. DC-DC converter systems may include an input, an output, a resonant switched-capacitor DC-DC converter, and a second DC-DC converter. The resonant switched-capacitor DC-DC converter may include a first input side and a first output side. The second DC-DC converter may include a second input side and a second output side. The first input side may be connected to the input, the second input side may be connected to an input voltage, and the first and second output sides may be connected in series to the output. In some examples, the second DC-DC converter may be a buck-boost DC-DC converter.

Abstract: Provided are a method and device for accessing a secure network. The method includes that: a new node which intends to access a secure network triggers a function of configuring security parameters automatically; and the new node accesses the secure network according to the security parameters configured automatically. Through the disclosure, the problem in the related art that low security is brought when a user does not configure security parameters manually while poor user experience exists when the user configures the security parameters manually is solved, thereby achieving the effect that security parameters of an accessed secure network can be configured without manual configuration and user experience is improved effectively.

Abstract: An electric power tool includes a motor, a power supply circuit for supplying power to the motor, and a control device which is able to measure current of the motor and control duty cycle of the power supply circuit. When the measured current of the motor is greater than a predetermined current value, the duty cycle of the power supply circuit is increased to a first predetermined value. If the current of the motor is still greater than the predetermined current value, the duty cycle of the power supply circuit is decreased to a second predetermined value such that the current of the motor is equal to or less than the predetermined current value.

Abstract: A touch display device and a method for driving the same are provided. The touch display device includes a display panel and a touch panel. In the method, the touch display device provides a source output signal and outputs a plurality of pixel voltages during an enable period of the source output signal to drive the display panel. The touch display device periodically reduces the enable period of the source output signal according to a horizontal synchronization signal corresponding to a turned-on sequence of each row of pixels, so as to establish a touch sensing period. Based thereon, the touch sensing circuit scans the touch panel during the touch sensing period that does not overlap with the enable period of the source output signal, so as to obtain sensing signals for accurately indicating electrical variations of the touch panel.

Abstract: A probe-type connector includes an insulating body having a receiving space and a plugging slot which both communicate with each other, a probe set received in the receiving space and including a probe terminal, an insulating part, and an elastic part, and a connecting plate plugged into the insulating body corresponding to the plugging slot and having a connecting portion. The probe terminal has a connecting segment, and a flexible connecting arm extending from the connecting segment toward the plugging slot. The insulating part is connected between the connecting segment and the elastic part that enables the insulating part and the probe terminal to reciprocate in the receiving space. The flexible connecting arm is electrically connected to the connecting portion. Therefore, the probe terminal can transmit electrical signals directly to the connecting plate, which can be applied to the transmission of high-frequency signals or electrical energy.

Abstract: An electrical wrench includes a housing, a power member, a reversing mechanism, a support transmission assembly, an opening gear, a main control assembly and a restoring assembly. The housing includes having two projections, for example shaped as claws, arranged oppositely to cooperatively define an entrance. The power member, the reversing mechanism, the support transmission assembly and the opening gear are cooperatively coupled to one another and accommodated in the housing. The opening gear includes an outer teeth portion, an opening and a driving portion in communication with the opening, a tubular member for engaging with a fastener positioned in cooperation with the opening gear through the entrance. The restoring assembly includes an identifying portion, a sensor for sensing the position of the identifying portion, a control circuit board, a restoring switch and a restoring switch operator.

Abstract: An electronic device includes a first body, a second body, a pivot shaft, a pivot holder and restraining mechanisms. The first body includes a first connecting side, a groove disposed at the first connecting side and a first attracting component disposed in the groove. The second body includes a second connecting side where the pivot shaft is disposed at. The pivot holder connects the pivot shaft to rotate relative to the second body via the pivot shaft. The restraining mechanisms are disposed at the pivot holder. Each restraining mechanism includes a hollow protrusion and a second attracting component movably disposed in the hollow protrusions respectively. The first body is adapted to be engaged with the hollow protrusions via the groove. The second attracting components move away from the pivot holder and are attracted to the first attracting component, such that the first body is engaged with the pivot holder.

Abstract: A high power density switched-capacitor DC-DC converter is disclosed. According to one aspect, the subject matter described herein includes a high power-density switched-capacitor DC-DC converter that includes: first and second voltage summing circuits, each voltage summing circuit producing an output voltage that is substantially equal to an input voltage; and a switching circuit connected between the first and second voltage summing circuits and configured to provide a DC voltage source as an input to the first and second voltage summing circuits, wherein the converter produces an output voltage that is the sum of the voltage produced by the first voltage summing circuit, the voltage provided by the DC voltage source, and the voltage produced by the second voltage summing circuit.

Abstract: A connector structure with a retractable terminal includes an insulative main body having a receiving portion and a through hole. A terminal assembly includes a push pin and a connecting terminal, the connecting terminal having a connecting portion, the push pin having a contact portion and an attachment portion, the contact portion protruded out of the through hole, the attachment portion disposed inside the receiving portion; an elastic unit arranged inside the receiving portion and indirectly abutted the push pin protruded out of the through hole; an electrical insulating member covering an outer of the attachment portion of the push pin and disposed between the push pin and the elastic unit for insulation; the electrical insulating member slidably contacts the receiving portion, and a cut-out slot formed on the electrical insulating member, the connecting portion of the connecting terminal penetrating the cut-out slot to electrically contact the push pin.

Abstract: A connector structure with a retractable terminal includes an insulative main body having a receiving portion and a through hole. A terminal assembly includes a push pin and a connecting terminal, the connecting terminal having a connecting portion, the push pin having a contact portion and an attachment portion, the contact portion protruded out of the through hole, the attachment portion disposed inside the receiving portion; an elastic unit arranged inside the receiving portion and indirectly abutted the push pin protruded out of the through hole; an electrical insulating member covering an outer of the attachment portion of the push pin and disposed between the push pin and the elastic unit for insulation; the electrical insulating member slidably contacts the receiving portion, and a cut-out slot formed on the electrical insulating member, the connecting portion of the connecting terminal penetrating the cut-out slot to electrically contact the push pin.

Abstract: An integrated circuit can include at least one slew generator circuit comprising at least one body biasable reference transistor, the slew generator circuit configured to generate at least a first signal having a slew rate that varies according to characteristics of the reference transistor; a pulse generator circuit configured to generate a pulse signal having a first pulse with a duration corresponding to the slew rate of the first signal; and a counter configured to generate a count value corresponding to a duration of the first pulse.

Abstract: An LED driver for a plurality of LED light strings has a common node and a plurality of driver output nodes for connection of a plurality of LED light strings. A master power circuit is provided and has a master output connected with the common node. A plurality of slave power circuits are provided which each have a slave output connected with a respective one of the driver output nodes.