Multifunctional control circuit and electronic equipment based on multi-segment slide switch

Abstract

The invention discloses a multifunctional control circuit based on a multi-stage sliding switch and electronic equipment. At least four pins are arranged in the sliding switch, namely, the first pin, the second pin, the third pin and the fourth pin, and the first pin, the second pin and the third pin are sequentially arranged in the sliding switch. The first pin is connected with the ground, the second pin is connected with the startup and shutdown control end of a system circuit and is connected with an upward pull power source, the third pin is connected with a main power source of the system circuit, and the fourth pin is used for transmitting trigger signals to a function trigger end of the system circuit. The upward pull power source is built after the system circuit is started up and operates. According to the multifunctional control circuit based on the multi-stage sliding switch, the upward pull power source which is built after the system circuit is started up and operates is connected with the startup and shutdown control end of the system circuit, high-level startup signals are provided for the system circuit, and therefore the system circuit is effectively prevented from being shut down abnormally when other functions are triggered.

Description

Technical field [0001] The invention belongs to the technical field of sliding switch control circuits, and specifically relates to a multi-functional control circuit designed for a multi-stage sliding switch and an electronic device designed by using the control circuit. Background technique [0002] In many current electronic devices, multi-stage sliding switches are often used to control the on-off of the electronic devices and realize the triggering of certain specific functions. For example: in many existing Bluetooth headsets, a three-stage sliding switch is often used to control the switch and pairing of the Bluetooth headset, such as figure 1 The three-stage slide switch shown is provided with 4 pins and provides three-level control: when the 1, 2 pins are connected, it is the first gear for shutdown control; when the 2, 3 pins are connected, it is the second gear for Power-on control; when pin 2 and pin 4 are connected, it is 3 gears, used for pairing control of Bluetoot...

AI Technical Summary

Problems solved by technology

[0004] figure 2 The multi-function control circuit based on the design of the three-stage slide switch shown in the figure, when sliding from the power-on gear to the pairing gear, due to user operation problems, it is easy to cause the 2 pins, 3 pins, and 4 pins of the slide switch SW1 to be disconnected. At this time, because the potential of pin 3 becomes low, the potential of the POWER ON control terminal of the Bluetooth chip becomes low, and the Bluetooth chip stops running, resulting in an abnormal shutdown of the headset, which in turn affects the normal use of the user.

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