Multifunctional control circuit based on multi-stage sliding switch and electronic equipment

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 slide switch control circuits, and in particular relates to a multi-functional control circuit designed for multi-section slide switches and electronic equipment designed using the control circuit. Background technique [0002] In many current electronic devices, multi-stage slide switches are often used to control the electronic devices on and off and to trigger certain specific functions. For example: in many existing bluetooth earphones, a three-stage sliding switch is often used to control the on / off and pairing of the bluetooth earphones, such as figure 1 The three-stage sliding switch shown has 4 pins and provides three-level control: when pins 1 and 2 are connected, it is gear 1, which is used for shutdown control; when pins 2 and 3 are connected, it is gear 2, which is used for Power-on control; when pins 2 and 4 are connected, it is gear 3, which is used for pairing control of Bluetooth headset...

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, due to the low potential of pin 3, the potential of the switch control terminal POWER ON 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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