An AC-DC power converter can include an AC-DC converter stage, such as a flyback converter, configured to receive an AC input voltage and deliver a DC output voltage. The converter can include an active capacitor bank (ACB) coupled to the output of the AC-DC stage. The ACB can include an energy storage capacitor and a plurality of switching devices operable as a bidirectional converter to alternately charge the capacitor from the DC output or discharge the capacitor to maintain output DC voltage regulation. The converter can also include control circuitry responsive to the AC input voltage to selectively: (1) enable the AC-DC stage and operate the switching devices to charge the capacitor from the DC output voltage; (2) and disable the AC-DC stage and operate the switching devices to discharge the capacitor to maintain DC output voltage regulation.

A power converter converts a medium-voltage output from a solar module to an appropriate voltage to power a solar tracker system. The power converter includes a voltage divider having at least two legs, a first semiconductor switch subassembly coupled in parallel with a first leg of the voltage divider, and a second semiconductor switch subassembly coupled in parallel with a second leg of the voltage divider. The power converter may be a unidirectional or a bidirectional power converter. In implementations, the signals for driving the semiconductor switches of the first and second semiconductor switch subassemblies may be shifted out of phase from each other. In implementations, if the bus voltages to the semiconductor switches are not balanced, the pulse width of the driving signal of the semiconductor switch supplied with the higher bus voltage is decreased for at least one cycle.

A reference voltage generator includes an input terminal configured to receive an enable signal and an output terminal configured to provide an output signal. A voltage generator circuit is arranged to generate a first output voltage signal, and a pre-settling circuit is arranged to generate a second output voltage. The pre-settling circuit is configured to provide the second output voltage signal at the output terminal in response to the enable signal received at the input terminal, and following a first time period provide the first output voltage at the output terminal.

A reference voltage generator includes an input terminal configured to receive an enable signal and an output terminal configured to provide an output signal. A voltage generator circuit is arranged to generate a first output voltage signal, and a pre-settling circuit is arranged to generate a second output voltage. The pre-settling circuit is configured to provide the second output voltage signal at the output terminal in response to the enable signal received at the input terminal, and following a first time period provide the first output voltage at the output terminal.

The present document relates to a power converter. The power converter may be configured to convert an input voltage at the input of the power converter into an output voltage at an output of the power converter. The power converter may comprise a pass device, a feedback circuit, and a bypass circuit. The pass device may be coupled between the input of the power converter and the output of the power converter. The feedback circuit may be configured to generate, in a voltage regulation mode, a drive signal for driving a control terminal of the pass device. The bypass circuit may be configured to apply, in a bypass mode, a predetermined voltage to the control terminal of the pass device.

The present disclosure relates to the technical field of printer consumables, in particular to threshold variable feedback circuit, consumable chip and consumables. The feedback circuit comprises a control unit; a feedback module including four different feedback units connected in parallel between the output terminal and the ground; each one of the feedback units comprises a gating component and feedback component that are connected in series between the output terminal and the ground; the control unit is electrically connected with the gating component of each one of the feedback units such that the feedback module selects and outputs an electrical signal of one of the feedback units to the output terminal. Selecting different feedback units can generate different feedback voltages to respond to the verification requirements of the imaging device, so that the consumable can pass the verification of the imaging device.

The present disclosure relates to the technical field of printer consumables, in particular to threshold variable feedback circuit, consumable chip and consumables. The feedback circuit comprises a control unit; a feedback module including four different feedback units connected in parallel between the output terminal and the ground; each one of the feedback units comprises a gating component and feedback component that are connected in series between the output terminal and the ground; the control unit is electrically connected with the gating component of each one of the feedback units such that the feedback module selects and outputs an electrical signal of one of the feedback units to the output terminal. Selecting different feedback units can generate different feedback voltages to respond to the verification requirements of the imaging device, so that the consumable can pass the verification of the imaging device.

A linear power supply circuit is provided with: an output transistor; and a driver for driving the output transistor on the basis of the difference between a voltage based on an output voltage and a reference voltage. The driver is provided with: a differential amplifier for outputting a voltage according to the difference between the voltage based on the output voltage and the reference voltage; a capacitor one end of which has an output of the differential amplifier applied thereto and the other end of which has the voltage based on the output voltage applied thereto; a converter for converting a voltage based on the output of the differential amplifier into an electrical current and outputting the electrical current; and a current amplifier for amplifying the electrical current of the output of the converter. The supply voltage of the differential amplifier is a first constant voltage or the input voltage.

A linear power supply circuit is provided with: an output transistor; and a driver for driving the output transistor on the basis of the difference between a voltage based on an output voltage and a reference voltage. The driver is provided with: a differential amplifier for outputting a voltage according to the difference between the voltage based on the output voltage and the reference voltage; a capacitor one end of which has an output of the differential amplifier applied thereto and the other end of which has the voltage based on the output voltage applied thereto; a converter for converting a voltage based on the output of the differential amplifier into an electrical current and outputting the electrical current; and a current amplifier for amplifying the electrical current of the output of the converter. The supply voltage of the differential amplifier is a first constant voltage or the input voltage.

An electronic device including a voltage divider adaptively changing a voltage division ratio is provided. The electronic device comprises a rechargeable battery; a connector configured to connected the electronic device with an external electronic device; a voltage divider comprising a plurality of capacitors and a plurality of switches for switching an electrical path between each of the plurality of capacitors and the rechargeable battery, wherein the voltage divider is configured to provide three or more voltage division ratios; and a processor operably coupled with the voltage divider and the connector, wherein the processor is configured to: receive an indicator indicating a first voltage of a first power from the external electronic device; select a voltage division ratio from the three or more division ratios, based at least in part on the indicator; and control the plurality of switches on the basis of the selected voltage division ratio, and wherein the voltage divider is configured to: charge a rechargeable battery with a second voltage by dividing the first voltage according to the selected voltage division ratio.