9results about How to "Extended voltage range" patented technology

The utility model belongs to the technical field of dial logic circuits, and particularly relates to a logic control circuit, which comprises a dial switch module, an integrated circuit (IC) control chip and a logic control module, the dial switch module is connected with the logic control module, and the logic control module is connected with the IC control chip. The dial switch module is a two-position single-pole single-throw independent switch. A first bit of the dial switch module is connected in parallel to two ends of the third resistor and the fourth resistor which are connected in series, and a second bit of the dial switch module is connected in parallel to two ends of the second resistor and the third resistor which are connected in series; one end of the fifth resistor is connected with a GND port of the IC control chip and is in common ground with the GND port of the IC control chip, and the other end of the fifth resistor is connected with a detection port (DIM) of the IC control chip. Compared with an existing logic control circuit, the circuit has the advantages that the voltage change range of the detection port (DIM) is expanded, so that the application of a wider output gear is met.

The invention discloses a fractional order circuit and a method for adjusting parameters of the fractional order circuit. The fractional order circuit comprises a signal processing circuit module, a negative voltage current source circuit module and a current sampling and displaying circuit module. The signal processing circuit module is used for receiving the adjusted bias current signal; the signal processing circuit module is also used for adjusting bias current values input into the N groups of operational amplifier circuits according to the adjusted bias current signals so as to adjust zero point values and pole point values of the N groups of operational amplifier circuits, so that the frequency range capable of meeting the fractional order property is enlarged; and / or, adjusting the proportion of the bias current values input into the N groups of operational amplifier circuits according to the adjusted bias current signals so as to adjust the amplitudes of the N groups of operational amplifier circuits, the supported external signal voltage range is enlarged; and the signal processing circuit module is also used for processing an external input signal according to the adjusted N groups of operational amplifier circuits to obtain an output signal, and the output signal is a signal meeting the fractional order property.

The present invention provides a bidirectional power supply control system and method with a wide voltage range in the field of power control technology, the system includes: an AC power distribution module; an AC-DC converter connected to the AC power distribution module; an energy bidirectional conversion module connected to the AC-DC converter; a host computer connected to the energy bidirectional conversion module; the energy bidirectional conversion module includes: a first DC-DC converter connected to the AC-DC converter; a second DC-DC converter connected to the AC-DC converter; a current sensor connected to the first DC-DC converter; a power output unit connected to the current sensor and the second DC-DC converter; a voltage sensor connected in parallel at both ends of the power output unit and the load; a temperature sensor; a signal processing unit connected to the current sensor, the voltage sensor, and the temperature sensor; a DSP chip connected to the first DC-DC converter, the second DC-DC converter, the signal processing unit, and the host computer. The advantages of the present invention are: the voltage variation range and operation stability of the power control system are greatly improved.

This invention provides an adjustable voltage charge pump circuit and device. The circuit includes a voltage multiplier module, a voltage booster module, and a voltage output module. The voltage multiplier module, the voltage booster module, and the voltage output module are all connected to a clock module. The voltage multiplier module is connected to the voltage booster module. The voltage multiplier module generates a voltage multiplier signal based on the clock signal and outputs the voltage multiplier signal to the voltage booster module. The voltage booster module generates a boost signal based on the clock signal and the voltage multiplier signal and outputs the boost signal to the voltage output module. The voltage output module generates an output signal based on the clock signal and the boost signal. This application has the advantages of a wider voltage range for the circuit output signal and greater flexibility in adjusting the circuit output signal.

The invention belongs to the technical field of dial logic circuits, and particularly relates to a logic control circuit and a control method thereof, the logic control circuit comprises a dial switch module, an IC control chip and a logic control module, the dial switch module is connected with the logic control module, and the logic control module is connected with the IC control chip. The dial switch module is a two-position single-pole single-throw independent switch. A first bit of the dial switch module is connected in parallel to two ends of the third resistor and the fourth resistor which are connected in series, and a second bit of the dial switch module is connected in parallel to two ends of the second resistor and the third resistor which are connected in series; one end of the fifth resistor is connected with a GND port of the IC control chip and is in common ground with the GND port of the IC control chip, and the other end of the fifth resistor is connected with a detection port (DIM) of the IC control chip. Compared with an existing logic control circuit, the circuit has the advantages that the voltage change range of the detection port (DIM) is expanded, so that the application of a wider output gear is met.

The invention provides a control method and a control device of a current converter, which are characterized in that injected zero sequence voltage is allowed to be injected into the current converter, the voltage of a bridge arm capacitor can be changed, discretization processing can be carried out on the voltage variation of the bridge arm capacitor, and the voltage of the bridge arm capacitor in the next sampling period is obtained. And carrying out balance control on the bridge arm capacitor according to the voltage of the bridge arm capacitor in the next sampling period. According to the invention, the balance control of the bridge arm capacitor is realized, and the long-term reliable operation of the converter is ensured, namely, the operation reliability of the converter is improved. In addition, according to the invention, the output voltage range (a power frequency voltage range or a low frequency voltage range and the like) of the current converter can be enlarged, so that the current converter is suitable for a scene with a high requirement on the voltage range. In addition, the voltage variation of the bridge arm capacitor can be reduced, so that the cost of the sub-module is reduced, and the economical efficiency of the converter is improved.

The utility model provides a control guiding sampling circuit and a charging pile, the control guiding sampling circuit is connected with a voltage detection point, the control guiding sampling circuit comprises a first voltage dividing conversion module, a second voltage dividing conversion module and a main control chip, the first voltage dividing conversion module is used for dividing the negative voltage of the voltage detection point, and the second voltage dividing conversion module is used for dividing the negative voltage of the voltage detection point; reversing the divided first sub-voltage, and inputting the reversed first voltage to the main control chip; the second voltage division conversion module is used for dividing the positive voltage of the voltage detection point, amplifying a second sub-voltage after voltage division, and inputting the amplified second voltage to the main control chip; the main control chip is used for determining the charging state represented by the voltage detection point according to the first voltage or the second voltage; the first voltage and the second voltage are in a voltage input range of the main control chip.

This invention discloses a buck-boost bipolar bidirectional input / output converter, comprising a first filter capacitor C1, a first circuit unit, an energy storage inductor L, a second circuit unit, and a second filter capacitor C2 connected in sequence. The first circuit unit adopts a half-bridge or full-bridge structure, and the second circuit unit adopts a half-bridge or full-bridge structure. At least one of the first and second circuit units adopts a full-bridge structure, enabling mutual conversion between the bipolar voltages of the first and second circuit units, thus multiplying the voltage variation range on the input and output sides. This invention improves upon the traditional four-switch buck-boost DC-DC converter, achieving stable and adjustable voltage gain by changing the duty cycle while realizing high-frequency, high-efficiency bipolar bidirectional DC-DC conversion, significantly improving the converter's wide-range voltage supply capability.

The invention discloses a threshold-adjustable low-voltage detection circuit, a chip and an integrated circuit. The circuit comprises a signal control module, an inverted T-shaped resistance network digital-to-analog converter (DAC) module, a first inverting amplifier, a summing circuit and a comparator. When the signal control module receives a low-voltage detection instruction, a control signal is sent to the inverted T-shaped resistance network DAC module, the control signal is a signal matched with a target low-voltage detection gear corresponding to the low-voltage detection instruction, and the inverted T-shaped resistance network DAC module controls the low-voltage detection gear based on the output voltage of an external second voltage input end and the control signal. And the comparator outputs a voltage threshold corresponding to the target low voltage detection gear to the summing circuit, the summing circuit carries out addition operation on the voltage threshold and the output voltage of the first inverting amplifier to obtain a voltage after operation, and the comparator compares the voltage after operation with the output voltage of the voltage device to be detected based on the voltage after operation and outputs a voltage detection result. By applying the scheme provided by the invention, the detection cost can be greatly reduced.