30results about How to "Simple application circuit" patented technology

A capacitive touchpad comprises two traces with a plurality of first and second sensors coupled thereto respectively, and the first and second sensors are arranged interlaced and uneven spaced to each other. By detecting the capacitance variances produced by the sensors from the traces, phase leading or lagging Z-axis signals are generated to determine the moving direction of a finger sliding on the capacitive touchpad.

The invention relates to a constant current and constant voltage control circuit based on a sampling resistor in a chip. By arranging a routing resistor or a Poly resistor which can be formed in the chip as a sampling resistor, peripheral elements of the IC can be reduced, for example, the external sampling resistor of the IC is not needed, the precision of output current can be improved or stabilized, and the cost saving and efficiency improvement are facilitated. The constant current and constant voltage control circuit comprises a chip packaging body which is provided with a switch control pin, the outer side of the switch control pin is connected with one end of an inductor, the other end of the inductor is a constant current output end, and the sampling resistor in the chip is arranged between the other end of the inductor and the output voltage node of a dual-power tube.

The invention discloses a static magnetic characteristic measuring apparatus, comprising a detection module, a control module and an operation module, wherein the detection module comprises an N-shaped magnet, an excitation coil wound on the magnet and a Hall element placed at one end of the magnet; the control module comprises a programmable logic controller (PLC), an A / D converter, an excitation power supply, a relay and a switching power supply; the PLC is electrically connected with the A / D converter; the coil of the relay is electrically connected with the PLC; the ports of the relay arerespectively electrically connected with the excitation coil and the excitation power supply; the output end of the Hall element is electrically connected with the input end of the A / D converter; thepower supply end of the Hall element is electrically connected with the switching power supply; and the operation module comprises an industrial computer electrically connected with the control module. The measuring apparatus dispenses with demagnetization during measuring, thus realizing continuous measurement of the magnetic characteristic parameters and improving the efficiency of measurement.

The invention relates to the technical field of electronic engineering, in particular to a PDP power integration module and a method for manufacturing the same; the PDP power integration module is characterized in that a copper-clad layer of a ceramic substrate is provided with a signal lead pin, a power lead pin and a power control circuit, which are welded and fixed by soldering tin; the power control circuit consists of two IGBT power topological circuits; one of the power topological circuits consists of two IGBT semi-bridge circuits with unconnected C electrodes and E electrodes and is driven by a high-pressure drive IG; the E electrode of the upper arm IGBT and the C electrode of the lower arm IGBT are connected in series with an FRD respectively; the other power topological circuitconsists of two IGBT standard semi-bridge circuits with connected C electrodes and E electrodes and is driven by another high-pressure drive IC; the upper arm IGBT and the lower arm IGBT consist of two chips connected in parallel respectively; each IGBT is connected in parallel with a subsequent flow FRD; and the PDP power integration module has the advantages of simple operation, timely information feedback and the like.

The invention is applicable in the field of integrated circuits, and provides a cycle control white light-emitting diode (WLED) driving chip and a driving method. The cycle control WLED driving chip comprises six package pins including a state control pin, an input pin, a boost control pin, an output pin, a feedback pin and a grounding pin, a logic control unit used for performing logic judgment on state control signals and outputting corresponding logic state signals, and a boosting unit used for generating boost control signals according to the logic state signals and outputting boost direct current voltage which enables a WLED to realize corresponding state changes. The cycle control WLED driving chip adopts the logic control unit and the boosting unit to replace a logic control chip and a boost chip, integrates the two chips into an independent chip, deletes repeated reference units, reduces the package area of the driving chip, optimizes a package process, reduces the manufacturing cost, and simplifies application circuits of the driving chip.

The invention relates to a clock driving method for the single-ended input differential output of ATE testing. According to the method, a differential amplifier THS4503 and peripheral circuits thereof are adopted to convert single-ended digital signals generated by a MicroFLEX into differential digital signals required by an AD6645. The method includes the following steps that: the gain and bandwidth of a required differential amplifier are determined according to the amplitude range and bandwidth of single-ended digital signals generated by ATE; step 2, the values of feedback resistance and gain resistance are calculated, if a signal source has impedance, impedance matching is performed; step 3, peripheral circuit design is performed according to the working principle of the differential amplifier; and step 4, signals are generated and controlled through the IG-XL software programming of the MicroFLEX.

The invention provides a direct current-direct current voltage converter which comprises an inductor, a switch device, a first voltage feedback control circuit, a first rectification branch, at least one second rectification branch and at least one second feedback control circuit. The first voltage feedback control circuit is used for acquiring the output voltage of the first rectification branch output end to the first output end of a first load and using the output voltage as first feedback voltage, and controlling the first switch end and the second switch end of the switch device to switch on and off according to the first feedback voltage. The second feedback control circuit is used for acquiring the output voltage of the second rectification branch output end to the second output end of a second load and using the output voltage as second feedback voltage, and controlling the resistance of a controlled resistance circuit of the second rectification branch according to the second feedback voltage. According to the invention, the output end of each rectification branch is provided with an independent voltage feedback control circuit, so as to ensure the constant voltage performance of the output end of each rectification branch.

The invention provides a clamping circuit which is integrated inside a low-voltage MCU chip. The clamping circuit comprises a low-voltage NMOS pipe and a low-voltage PMOS pipe. A source electrode of the low-voltage NMOS pipe is connected with a low-voltage power source in the chip, and a substrate of the low-voltage NMOS pipe is connected with ground. A source electrode of the low-voltage PMOS pipe is connected with the ground, a substrate of the low-voltage PMOS pipe is connected with the low-voltage power source, and a drain electrode of the low-voltage PMOS pipe is connected with a drain electrode of the low-voltage NMOS pipe. A voltage leading-out point is formed on the connecting point of the drain electrode of the low-voltage PMOS pipe and the drain electrode of the low-voltage NMOS pipe, and the voltage leading-out point is connected with a high-voltage alternating-current level outside the chip. According to the clamping circuit, high-voltage alternating current signals which are excessive in amplitude are clamped within the largest withstand-voltage range which the low-voltage MCU chip can bear, and therefore an over-zero comparison function is integrated in a CMOS low-voltage technology, external elements are reduced, and cost is lowered.

The present invention relates to a projecting capacitive touch sensing device, a display panel, and an image display system. The projecting capacitive touch sensing comprises an array of a plurality of sensing units, each sensing unit including: a first electrode made of a sensing material, at least one second electrode made of a sensing material and being disposed around the peripheral of the first electrode, at least one first sensing axis electrically connected to the first electrode, and at least one second sensing axis electrically connected to the second electrodes. The first electrode is a parallelogram, while the second electrodes are triangular-shaped. The first electrode and the plurality of second electrodes are arranged to form a rectangular, and a non-sensing area is defined between the first electrode and the second electrodes.