Method for realizing enhanced power supply to external equipment through mobile phone earphone jack

Abstract

The invention provides a method for realizing enhanced power supply to external equipment through a mobile phone earphone jack. According to the method, a mobile phone, an earphone insertion pin and a rectification filtering circuit are adopted, the earphone insertion pin is connected with the input side of the rectification filtering circuit, the earphone insertion pin is inserted into the intelligent mobile phone earphone jack, and the rectification filtering circuit forms a current loop with left and right channels of the earphone jack instead of forming the loop with an audio ground line; the left and right channels of the earphone jack can respectively and independently output signals, during the output of different phases of waveform electric signals, such as the output of sine wave signals with the opposite phases, the signals are input into the input side of the rectification filtering circuit through the left and right channels of the earphone insertion pin, and higher direct current voltage can be obtained through rectification filtering.

Description

Technical field [0001] The present invention relates to a method of power supply, in particular to a method of enhancing power supply to external equipment through the earphone jack of a mobile phone. Background technique [0002] Mobile phones have become very popular in people's daily lives, and corresponding external micro-power electronic devices related to mobile phones have also emerged. Some of the power supply problems of these micro-power electronic devices are through the left or right channel of the phone’s earphone jack, forming a current loop with the audio ground, outputting AC waveforms, and obtaining DC power through rectification and filtering, but sometimes this way of power supply For some electronic devices, the power supply voltage is too low, which limits the promotion. Summary of the invention [0003] The technical problem solved by the present invention is: in view of the above existing problems, a method for enhancing power supply to external devices thr...

AI Technical Summary

Problems solved by technology

Some of the power supply problems of these micro-power electronic devices are that the left or right channel of the mobile phone headphone jack forms a current loop with the audio ground, outputs an AC waveform, and obtains a DC power supply through rectification and filtering, but sometimes this power supply method The power supply voltage is too low for some electronic devices, which limits the promotion

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