6results about How to "Avoid power failure" patented technology

This application discloses an auxiliary power supply module and a power distribution terminal, belonging to the field of power supply. The auxiliary power supply module includes a charging circuit, an energy storage unit, a power failure detection delay circuit, a boost circuit, and a power output terminal. The charging circuit is connected to the energy storage unit and is used to charge the energy storage unit using the main power supply voltage when the main power supply voltage is normal. The power failure detection delay circuit is connected to both the charging circuit and the boost circuit and is used to output a working voltage to the boost circuit when the main power supply voltage is less than a first target voltage for a target duration. The energy storage unit is connected to the boost circuit and is used to output a stored energy voltage to the boost circuit. The boost circuit is connected to the power output terminal and is used to supply power at the working voltage, converting the stored energy voltage into a supply voltage and providing it to the power output terminal. The supply voltage is used to power the power distribution terminal. This application can improve the service life of the auxiliary power supply module and improve the stability of power supply.

The utility model provides a kind of passive power supply circuit and power supply equipment, it is related to the technical field of energy storage, energy storage module;Rear power supply module, including the first voltage monitoring submodule and linear voltage stabilizer of being connected, the input of the first voltage monitoring submodule is connected with the energy storage module;The output voltage of the energy storage module is lower than first threshold value when the microcontroller is in working condition, the microcontroller is in low power consumption state;The output voltage of the energy storage module is higher than first threshold value, the first voltage monitoring submodule outputs first level signal, the microcontroller receives the first level signal, and the microcontroller works normally. When the power supply voltage of energy storage module is too low by the embodiment provided by the utility model, the microcontroller is adjusted to low power consumption state, when the voltage of energy storage module recovers, the microcontroller resumes work, and the microcontroller is prevented from power failure.

The utility model relates to controller technical field, concretely relates to a kind of whole vehicle controller of electric explosion-proof mine car.The scheme of the present application, signal input unit integration analog quantity, switching value, hard wire wake-up and frequency quantity input module, the analog quantity signal of speed, pressure etc. sensor can be directly compatible, equipment state switching value signal, motor speed frequency quantity signal and vehicle wake-up hard wire signal, without multiple independent acquisition device adapter.This shortens signal transmission path, reduces external interference, improves the accuracy and real-time of data acquisition.OC output module stable output control signal, meet electric explosion-proof mine car drive, brake, steering and other actuator control requirements;Low-voltage power supply module directly for external low-power device power supply, without additional power module.Both avoid the power failure caused by poor compatibility of traditional controller power module, reduce the number of vehicle power components, reduce fault point.

The application discloses an Ethernet power supply circuit and a smart mobile device, and relates to the technical field of Ethernet power supply, wherein the Ethernet power supply circuit comprises a network transformer module, which comprises at least two network transformer units; for any network transformer unit, a transformer in the network transformer unit is connected with an Ethernet interface, used for receiving a data signal of a corresponding Ethernet channel in the Ethernet interface and transmitting the data signal to a corresponding load; and the Ethernet power supply circuit further comprises a power switch module, which comprises at least two power switches; for any power switch, the power switch is connected with an intermediate tap of a corresponding network transformer unit, used for outputting a power supply signal to the intermediate tap according to a corresponding control signal, so that the corresponding transformer of the intermediate tap transmits the power supply signal to the corresponding load. The application realizes independent power supply control and fault isolation of each PoE channel, thereby guaranteeing stable starting and normal operation of the overall function of the device.

The utility model relates to the technical field of power supplies, and discloses a self-locking power supply control circuit based on a self-resetting switch, which is connected with an equipment master controller and is used for controlling the on-off between a power supply input end and a power supply output end, and the equipment master controller is connected with the power supply output end and is used for accessing an input signal and generating an output signal. The self-locking power supply control circuit comprises a first MOS switch which is connected between a power supply input end and a power supply output end and is used for outputting an input signal, an NPN switch which is connected with the first MOS switch, the power supply input end, the power supply output end and an equipment master controller so as to access an output signal, and a self-resetting switch which is connected with the power supply output end, the equipment master controller and the first MOS switch. The second MOS switch and the first MOS switch are connected in parallel between the power supply input end and the power supply output end and are connected with the NPN switch; and the third MOS switch is connected with the power supply input end and the NPN switch.

The invention discloses an LDO circuit and a control method, the LDO circuit comprises an LDO module, a voltage following module, a first switching module and a second switching module, the LDO module is used for generating a first voltage based on a reference voltage, the voltage following module is used for carrying out voltage following on the first voltage to generate a second voltage, and the second switching module is used for carrying out voltage following on the second voltage. The first switching module is used for turning on the voltage following module in a normal mode and turning off the voltage following module in a low-power-consumption mode, and the second switching module is used for outputting first voltage in the low-power-consumption mode and outputting second voltage in the normal mode. According to the LDO circuit and the control method, the requirement for stable power supply in a low-power-consumption mode is met through the basic LDO module, the response speed of the circuit in a normal mode is increased through the voltage following module, active mode switching is achieved through the switching modules, and therefore dual-mode power supply is completed.