Circuit with indicating lamp and capable of charging battery while supplying power to equipment

Abstract

A circuit with an indicating lamp and capable of charging a battery while supplying power to equipment belongs to the field of electronic circuits, and is used for solving the problem that an adapter cannot charge the battery. The circuit comprises an adapter, a current-limiting resistor R1, an anti-backflow diode D3, the battery, an anti-backflow diode D4, electric equipment, a bridging diode D5, a signal processing module and an LED indication state module. The positive electrode of the adapter, the current-limiting resistor R1, the anti-backflow diode D3, the battery, the anti-backflow diode D4 and the positive electrode of the electric equipment are sequentially connected in series, the input end of the bridging diode D5 is connected with the positive electrode of the adapter, and the output end of the bridging diode D5 is connected with the positive electrode of the electric equipment; and the signal processing module is respectively connected with the current-limiting resistor R1 and the LED indication state module. The circuit has the advantages that: the battery can be charged while power is supplied to electric equipment, the charging state can be displayed, and meanwhile the circuit is simple in structure, low in cost and suitable for wide application.

Description

technical field [0001] The invention belongs to the field of electronic circuits, and in particular relates to a circuit with an indicator light which can simultaneously charge a battery when supplying power to equipment. Background technique [0002] At present, many massage chairs, electric furniture, electric sofas, lift tables and other products on the market are equipped with lithium-ion power battery systems. The matching special charger can only charge the battery. The power is not enough to directly drive massage chairs, electric furniture, electric sofas, lift tables and other products to work. Ordinary adapters do not have the constant current function, and the output power is enough to directly drive massage chairs, electric furniture, electric sofas, lift tables and other products to work, but because they do not have the constant current function, they cannot charge the battery. Contents of the invention [0003] In order to solve the above problems, the pres...

AI Technical Summary

Problems solved by technology

[0002] At present, many massage chairs, electric furniture, electric sofas, lift tables and other products on the market are equipped with lithium-ion power battery systems. The matching special charger can only charge the battery. The power is not enough to directly drive massage chairs, electric furniture, electric sofas, lift tables and other products to work

Ordinary adapters do not have the constant current function, and the output power is enough to directly drive massage chairs, electric furniture, electric sofas, lift tables and other products to work, but because they do not have the constant current function, they cannot charge the battery.

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