Light control circuit and electronic equipment

Abstract

The embodiment of the invention relates to the field of electronic technology, and discloses an indicator light control circuit and electronic equipment. The indicator light control circuit of the embodiment of the present invention includes: a comparator, a voltage dividing unit, a pulse modulation unit and a first AND gate; The input terminal is used to connect the rechargeable battery and is used to receive the battery voltage signal; the output terminal of the comparator is connected to the first input terminal of the first AND gate, and is used to output the battery voltage signal and the divided charging voltage signal Comparing the signal; the pulse modulation unit is connected to the second input terminal of the first AND gate, and the output terminal of the first AND gate is connected to the indicator light; the embodiment of the present invention enables the indicator light to flash when the rechargeable battery is in a low-voltage charging state, thereby The user is reminded of the low-voltage charging state of the rechargeable battery, and the user is prevented from performing the power-on operation in the low-voltage charging state as much as possible, which provides convenience for the user to successfully power on.

Description

technical field [0001] The embodiments of the present invention relate to the field of electronic technology, in particular to an indicator light control circuit and electronic equipment. Background technique [0002] Mobile phones, tablet computers and other electronic devices are widely used in people's daily life, and the electronic devices are updated quickly. Some people may have multiple electronic devices; when the electronic devices are not used for a long time, the rechargeable batteries in the devices It may be in a low-voltage state, and it cannot be turned on immediately when it is used again, requiring the user to charge the rechargeable battery in the electronic device. [0003] Existing electronic equipment includes an indicator light and a rechargeable battery; when the user is charging the electronic equipment, when the rechargeable battery is in a low-voltage charging state, the indicator light will remain on to indicate that it is charging; when the rechar...

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Problems solved by technology

[0004] However, the inventor has found that there is the following problem in the prior art: in the process of charging the existing electronic equipment, when the rechargeable battery is in a low-voltage charging state and a non-low-voltage charging state, the indicator light remains in a state (for example, the indicator light always on), the user cannot know whether the rechargeable battery is in a low-voltage charging state or a non-low-voltage charging state according to the state of the indicator light. cannot be turned on), but cannot be turned on successfully, the user may perform the startup operation several times, so that the rechargeable battery has changed from a low-voltage state to a non-low-voltage state when a certain operation is performed, and thus successfully turned on; it can be seen that the existing equipment can be turned on The process is more troublesome

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