39results about How to "Reduce control circuit" patented technology

A battery pack (33) includes at least one battery cell (39), and is designed to supply an output voltage for feeding electric energy to a load (23) so that the load may perform a function. A battery control device (35) arranged to generate control signals for controlling a battery pack, a device (21) including a battery pack, and a method for controlling a battery pack are also described.

An integrated mass flow sensor is manufactured by a process of carrying out a micro-machining process on an N or P-type silicon substrate with orientation <100>. This mass flow sensor comprises an upstream thin-film heater, an downstream thin-film heater, and a pair of thin-film heat sensing elements, and a thermally isolated membrane for supporting the heaters and the sensors out of contact with the substrate base. This mass flow sensor is operated with three sets of circuits, a first circuit for measuring a flow rate in a first range of flow rates, a second circuit for measuring a flow rate in a second range of flow rates, and a third circuit in a differential configuration for measuring a flow rate in said first range of flow rates or said second range of flow rates, to significantly increase range of flow rate measurements and provide an optional for concentration measurement, while maintains a high degree of measurement accuracy.

The invention relates to a permanent magnet bias inner rotor radial magnetism bearing that is made up of out magnetizer, out magnetism separator, exciting winding, inner magnetizer, rotor iron core. Four stator iron cores form four magnetic poles and are connected with each other by out magnetism separator. Eight stator iron core forms eight magnetic poles and every stator magnetic pole has exciting winding. Outside the stator iron core is out magnetizer that is connected to stator iron core. The permanent magnet is located between the two out magnetizers. Inner the stator iron core is rotator iron core. And there is clearance between the inner surface of the stator iron core and the out surface of the rotator iron core. The second clearance exists between the out magnetizer and the permanent magnet to form electric excitation circuit. The invention has the advantage of reliability and easy to be controlled.

The radial magnetic bearing consists of outer magnetizer, permanent magnet, stator iron core, exciting coil, inner magnetizer ring and rotor iron core. Each stator iron core constitutes four stator magnetic poles, and two stator iron cores constitute eight stator magnetic poles on two, right and left, ends of the magnetic bearing and in four, X, Y, -X and -Y, directions. Each of the stator magnetic poles has corresponding wound exciting coil, and the stator iron core has connected outer magnetizer rings, permanent magnet between two outer magnetizer rings, inside rotor iron core with air gap between the inner surface of the stator iron core and the outer surface of the rotor iron core, and inner magnetizer ring to connect the right and left ends of the rotor iron core to form magnetic path. The present invention has the advantages of low power consumption, small size, light weight, easy manufacture, etc. and may be used as the no-contact support for rotating part in machine.

A vehicular lamp includes a lamp body; a plurality of LED light sources disposed inside a lamp chamber formed by a front cover positioned in front of the lamp body; and a lighting circuit portion positioned behind the LED light sources. The LED light source is electrically connected to a conductive bus bar, and forms a light-emitting surface at a position opposite the front cover. The lighting circuit portion is formed on the back side of the light-emitting surface of the LED light source with respect to the front cover, and a circuit element thereof is electrically connected to the conductive bus bar. The conductive bus bar to which the LED light source is connected and the conductive bus bar to which the circuit element is connected are conductively connected.

A generator-motor includes an alternator, electrode plates, a substrate, MOS transistors, and an MOS driver. Electrode plates are arranged on an end surface of the alternator so as to substantially form a U-shape to surround a rotation shaft of the alternator. MOS transistors are arranged on the electrode plate, while MOS transistors are arranged on the electrode plates respectively. The MOS driver is provided on the substrate arranged in a substantially U-shaped notch, and controls turn-on / off of the MOS transistors.

A heat controlled ultraviolet light apparatus includes a source of ultraviolet light, a cover, and a heating or cooling element that heats / cools the space or gap between the ultraviolet light source and the cover. Accordingly, the ultraviolet light source may be maintained at an optimal temperature thereby maximizing the efficiency of the ultraviolet light source in producing ultraviolet radiation. The apparatus may further include a temperature sensor and a control circuit to automatically control production of heat / cooling by the element based upon the ambient temperatures experienced by the ultraviolet light source during use. Methods are also provided for sanitizing heating and cooling coils of various devices such as an HVAC system, and cooling systems such as a refrigeration unit and an evaporative cooler.

A power conversion driving circuit is provided. The power conversion drive circuit includes a converting circuit, a control circuit and a load circuit. The converting circuit is coupled to an input voltage. The control circuit is coupled to the converting circuit for controlling the converting circuit to convert the input voltage to an output voltage. The load circuit includes a load detecting unit and a load. The load is coupled to the output voltage, and the load detecting unit is coupled to a detecting voltage source. The load detecting unit generates a load detecting signal to re-start the control circuit when the load circuit is inserted into the power conversion driving circuit.

A configuration comprising a magnetic sensor and a pointing control circuit, for implementing a pointing device, is rendered compact in size.To that end, the pointing control circuit is formed in the central part of an IC chip, substantially square in shape, and Hall elements are provided in four corners of the peripheral region of the pointing control circuit, respectively, thereby forming the magnetic sensor, comprising the Hall elements, integrally with the pointing control circuit. Further, the Hall elements are formed integrally with the pointing control circuit in the step of fabricating an IC, thereby uniting the Hall elements with the pointing control circuit.

A timing control circuit comprises at least three current control units coupled in parallel between a first circuit and a second circuit node. The current control units each have an active mode and an inactive mode. The current control units are responsive to a timing trigger event to pass current whose magnitude is dependent on how many of the current control units are in the active mode. The current control units comprise a plurality of groups. Current control units within a same group are responsive to a change in a bit of a control value corresponding to that group to switch together between the active and inactive modes, such that the magnitude of the current is dependent on which of the groups are in the active mode. The signal timing in the associated circuit is varied in dependence on the magnitude of the current.

A local coil for an MRI system includes a signal antenna to receive a magnetic resonance signal and a tuning / detuning circuit to subject the signal antenna part to switch control according to a control signal. The tuning / detuning circuit is connected to the signal antenna part. The tuning / detuning circuit includes a control signal interface, a resonant circuit and an AC / DC conversion circuit. The control signal interface receives the control signal. The resonant circuit includes a diode. The AC / DC conversion circuit converts an alternating current generated by an electromagnetic wave to a direct current. The AC / DC conversion circuit is connected in series with the diode. A small detuning control current may be used, and detuning control circuitry may be reduced.

The embodiment of the invention relates to a touch screen, a display device and a driving method of the touch screen. The touch screen comprises an array substrate with a public electrode layer which is divided into multiple arrays of distributed sub-electrodes, a display driving unit used for providing public electrode driving signals to electrode arrays within the display time interval, a touch driving unit used for providing touch signal driving signals to sub-electrode arrays within the touch time interval, wherein the array substrate further comprises a first switching unit used for switching and outputting public electrode driving signals and touch electrode driving signals to all sub-electrode arrays in a time-sharing mode such that display driving and touch driving of the touch screen are carried out.

A multilayer butterfly network is shown that is operable to transform and align a plurality of fields from an input to an output data stream. Many transformations are possible with such a network which may include separate control of each multiplexer. This invention supports a limited set of multiplexer control signals, which enables a similarly limited set of data transformations. This limited capability is offset by the reduced complexity of the multiplexor control circuits. This invention used precalculated inputs and simple combinatorial logic to generate control signals for the butterfly network. Controls are independent for each layer and therefore are dependent only on the input and output patterns. Controls for the layers can be calculated in parallel.

The invention provides a micro winding machine special computer, without numeral tubes and keyboards, which uses software to simplify hardware, uses a 87F51 single chip as the hardware of the winding machine special computer, adopts one integrated circuit for its integrate, and can only use software to display the rings, yield and rotation speed by one light emitting diode, only use software to input winding data, use software to realize inertia automatic check, use software to realized closed loop control for accurate winding, and only use one 5V direct current power supply. The micro winding machine special computer has the advantages of few interface elements, simplified circuit, simple production, accurate winding rings, eliminated keyboard accidents, low cost and high reliability.

The invention is the permanent magnet offset outside rotor axial magnetic bearing, which comprises the outside magnetizing ring, the permanent magnet, the stator iron core, the inner blocking magnet, the excitating coil, the inner magnetizer and the rotor iron core. Four stator iron cores compose the four stator magnetic poles in X and Y positive and negative directions and are connected by the inner magnetizer and inner blocking magnet; eight stator iron cores compose the eight magnetic poles at two ends of the magnetic bearing, and every stator magnetic pole is wound by the coil; the rotor iron core is outside of the stator iron core; the outside magnetizing ring is outside of the rotor iron core; the outside magnetizing ring connects the rotor iron core, the inner surface of the rotor iron core and the outer surface of the stator iron core have the clearance between them and form the air clearance; the permanent magnet is between the inner magnetizing; the inner magnetizer and the permanent magnet form the second air clearance to form the electric circuit. The invention solves the problem of the prior art and has reliable stability.

The arrangement of focus-detecting sensors for autofocus in multipoint range finding and the arrangement of light detection sensors for focus detecting regions are optimized. Further, the chip area and power consumption are reduced. Light detection sensors are provided on the sensor chip in a manner such as to be disposed between focus-detecting sensors provided on the same sensor chip.

A configurable length first-in first-out (FIFO) memory includes a memory core for storing data, a write address counter connected to the memory core for counting locations for writing the data to be stored, and a read address counter connected to the memory core for counting the locations for reading the stored data. The read address counter includes a comparator for generating a synchronous reset for itself. A selector is connected to the comparator for selecting a user defined FIFO length, or a pre-programmed write address counter length.

The invention is applicable to the technical field of switch control, and provides a control method based on a multi-input direct current converter switch state of a state machine, comprising the following steps: A, judging whether output voltage of an intermittent power supply is greater than a preset value or not; B, judging whether a continuous power supply has voltage output or not; and C, closing a direct current exchanger switch of an energy storage apparatus and executing the second judging step; and when a detector detects that the energy storage apparatus is fully charged, switching off the charging switch of the energy storage apparatus. Devices and related control circuits are reduced, and the power consumption is reduced; high power density, effective management, compact layout, and improved stability of the system are achieved; centralized control can be realized easily; and the cost and the volume of the system are reduced.