36results about How to "Adjustable current" patented technology

The invention relates to a driving circuit of a display panel. The driving circuit drives a plurality of pixel structures of the display panel. Each pixel structure comprises a light-emitting element, and the light-emitting element is coupled between a first voltage and a second voltage. The driving circuit comprises a power supply circuit which is coupled with the pixel structures and provides a first voltage and a second voltage. By adjusting the first voltage or / and the second voltage, a voltage between the first voltage and the second voltage is adjusted, so that a current flowing through the light-emitting elements of the pixel structures can be adjusted, and flicker of the display panel can be reduced.

The invention relates to an intelligent performance analysis and testing bench for batteries of motorized automobiles, which allows the studying and analysis on the charging and discharging characteristics of various batteries in a lab, so as to reduce the studying cost, shorten the studying time, simplify the studying procedures and improve the analysis accuracy. The invention comprises a main system interface module comprising a hi-voltage charging parameter setting module and a hi-voltage charging display module. The hi-voltage charging comprises hi-voltage programmed charging and hi-voltage constant-current charging. The main system interface module additionally comprises a low-voltage charging parameter setting module and a low-voltage charging display module. The low-voltage charging comprises low-voltage programmed charging and low-voltage constant-current charging. The main system interface module additionally comprises a discharging parameter setting module and a discharging display module. The charging comprises programmed discharging and constant-current discharging.

A trimming switch circuit without static power consumption belongs to the technical field of electronic circuits. It includes a trimming code loading module and a switch control module. The switch control module is connected to an externally given first input signal and a second input signal, and controls the switch control module to work or shut down according to the second input signal. According to the first input signal and The output signal fed back generates the first control signal, the second control signal and the timing signal for controlling the trimming code loading module; the trimming code loading module works or shuts down according to the first control signal and the second control signal, when After the fuse is blown, the pulse level of the corresponding output signal can be obtained, which is the target trimming code value. The invention has a simple structure, adopts a two-stage hysteresis comparator to control the beat output and has high reliability, and has no static power consumption after the circuit adjustment is completed.

The invention provides a composite slit leading dual-band and double-fed microstrip antenna with low elevation and high gain, and relates to a microstrip antenna. The microstrip antenna is provided with an upper substrate and a lower substrate, wherein an upper patch is arranged on the upper surface of the upper substrate and provided with a main upper microstrip patch which adopts an angularly symmetrical square chamfer structure; four symmetrical leading gaps are formed in the main upper microstrip patch, and four symmetrical slit leading vibrators are arranged on the outermost periphery of the main upper microstrip patch; an interlayer patch having the same structure with the upper patch is arranged between the upper substrate and the lower substrate and provided with a main interlayer microstrip patch which adopts the angularly symmetrical square chamfer structure; four symmetrical leading gaps are formed in the main interlayer microstrip patch, space is reserved between the four symmetrical leading gaps and the edges of the main interlayer microstrip patch, and four symmetrical rodlike leading vibrators are arranged on the periphery of the main interlayer microstrip patch; and a lower patch is arranged on the lower surface of the lower substrate, and a main lower microstrip patch is arranged on the lower patch.

The invention provides a controller for controlling a light source module. The light source module includes a first LED array and a second LED array. The controller includes a power input port, a first power output port and a second power output port. The power input port is used to receive power from the power converter. The first power output port is coupled to the first LED array. The second power output port is coupled to the second LED array. The controller transmits electric energy to the first LED array through the first power supply output port in the first discrete time slot sequence, and transmits electric energy to the second LED array through the second power output port in the second discrete time slot sequence, Wherein the first sequence of discrete time slots and the second sequence of discrete time slots do not overlap each other. The controller of the present invention enables multiple LED arrays to share the same group of current sensing ports in the controller, that is, multiple LED arrays are controlled by a single controller, reducing costs.

A microcurrent cesium ion source belongs to the technical field of ion sources. The ion source includes a cesium storage body and a sealing cover made of a material different from that of the cesium storage body. The work function of the material used for the sealing cover is higher than the ionization energy of cesium. The sealing cover is arranged to be joined with one end of the cesium storage body to form a vacuum seal. , the cesium ion source also includes a heater for heating the cesium source, the heater is arranged on the side close to the sealing cover, so that the cesium salt decomposes, the simple cesium gasifies, and the cesium atoms diffuse to the outer surface of the sealing cover through the sealing cover and on the outer surface Ionization creates a flow of cesium ions. The invention utilizes the diffusion effect of the cesium atoms in the sealing cover to continuously transport the cesium atoms to the outer surface thereof and draws the cesium ion flow based on the surface ionization. The invention provides a cesium ion source with adjustable current, exposure to the atmosphere and long service life, which not only reduces the requirements on the vacuum system, but also has the advantages of simple structure, convenient use and high cesium utilization rate.

A trimming circuit for an oscillator belongs to the technical field of electronic circuits. It includes a switch control module and a trimming code loading module. The input signals of the switch control module are the first input signal and the second input signal of the external input. The switch control module is controlled to work or shut down according to the second input signal. According to the first input The signal and the fed back output signal generate a first control signal, a second control signal and a timing signal for controlling the trimming code loading module. The trimming code loading module is controlled to work or shut down by the first control signal and the second control signal. The trimming code loading module includes a bias current generating unit and a plurality of trimming units. In each trimming unit, each The fuses are controlled by their own control signals. After the fuses are blown, the corresponding output control signals can be obtained. This level is the target trimming code value, which can be used to control the oscillator. The oscillator trimming circuit provided by the invention has simple structure, high reliability and no static power consumption.

The invention discloses a portable CT loop current tester, which comprises a casing, a circuit board and a battery for providing electric energy, the circuit board and the battery are both arranged in the casing; the circuit board is provided with a signal generator , jumper, signal processing circuit and output terminal, the output end of the signal generator is connected to one end of the jumper wire, the other end of the jumper wire is connected to the input end of the signal processing circuit, and the output end of the signal processing circuit is connected to the output terminal connect. The volume of the invention is small, and the magnitude of the output current is controllable and stable.