Signal source circuit based on charger and battery power supply and power supply method

Abstract

The invention relates to a signal source circuit based on a charger and battery power supply and a power supply method, belongs to the technical field of DC power supply, and solves the problems of high power loss and low working efficiency of the existing power supply resources. The signal source circuit comprises a charger interface, a battery box interface, a single-pole double-throw switch anda boost-buck module. The boost-buck module comprises a boosting chip, an inductor L1, a capacitor C3 and a freewheeling diode D2. One end of the inductor L1 is connected with a power supply positiveinput end, and the other end is connected with one end of the capacitor C3. The other end of the capacitor C3 is connected with the anode of the freewheeling diode D2. The VIN end of the boosting chipis connected with the power supply positive input end, the SWITCH end is connected with one end of the capacitor C3, and the GND end is connected with a power supply negative input end. The effect ofreplacing the low-power DC source with the output wide-range voltage is realized, the working efficiency of the circuit is improved and the power loss is also reduced.

Description

technical field [0001] The invention relates to the technical field of DC power supply, in particular to a signal source circuit and a power supply method based on charger and battery power supply. Background technique [0002] During the production and debugging process of some products, if one or several voltage sources are required to provide voltage signals, one or more voltage sources will be occupied. In the case of shortage of equipment resources, the production schedule will be delayed. [0003] When a voltage signal source is required in the work, generally, engineers will directly use a small power source to achieve the goal. When a product requires multiple voltage signal sources, more power sources will be occupied, which is wasteful. Resources may also be delayed due to insufficient equipment. [0004] Due to the above situation, the existing power resources have large power consumption, low working efficiency and resource shortage. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the embodiment of the present invention aims to provide a signal source circuit and power supply method based on charger and battery power supply to solve the problems of large power consumption and low work efficiency of existing power resources.

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