Voice coil motor short circuit detection equipment

Abstract

The invention relates to voice coil motor short circuit detection equipment. The equipment comprises a short circuit detection module and the technical key points are that: the short circuit detectionmodule is further connected with a voltage division circuit module and an alarm module; the short circuit detection module comprises a detection wiring port, a fourth divider resistor, a field effecttransistor and a relay; a first voltage division port of the voltage division circuit module is connected with one detection wiring port; the other detection wiring port is connected with a fourth divider resistor; the common end of the fourth voltage dividing resistor and the detection wiring port is connected with the grid electrode of the field effect transistor, the second voltage dividing port of the voltage dividing circuit module is connected with one input contact of the relay, the other input contact of the relay is connected with the source electrode of the field effect transistor,and the two output contacts of the relay are connected into a closed loop of the alarm module. The problem that an existing short circuit detection mechanism cannot comprehensively detect whether a breakdown short circuit condition occurs between the voice coil motor metal shielding shell and the internal conductive mechanism is solved, and rapid screening of the voice coil motor before delivery is completed.

Description

technical field [0001] The invention relates to the technical field of electronic product testing equipment, in particular to a voice coil motor short circuit testing equipment. Background technique [0002] With the continuous improvement of users' requirements for mobile phone standby power consumption, the power consumption detection requirements of all electronic components in mobile phones are becoming more and more stringent. As an indispensable component in mobile phone shooting, voice coil motor (VCM) is The detection of power consumption is also becoming more and more stringent. [0003] Due to the close distance between the metal shielding shell of the VCM motor and the internal conductive mechanism, there may be a risk of short-circuit breakdown between some metal shielding shells and the internal conductive mechanism due to technological reasons. This risk is reflected in the presence of less than 1 megohm between the metal shielding shell and the internal conduc...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a voice coil motor short circuit detection device with simple structure and reliable use, so as to solve the problem that the existing short circuit detection mechanism cannot fully detect whether a breakdown short circuit occurs between the metal shielding case of the voice coil motor and the internal conductive mechanism To solve the problem, complete the quick screening of the voice coil motor before leaving the factory, to avoid the waste of manpower and material resources in the entire production process at the back end

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