Device for controlling motor oscillating by audio frequency

Abstract

This invention relates to a device for controlling vibration of motors with audio, in which, the control circuit is composed of connected modules of audio signal amplification process, level testing and rhythm signal generation, sine wave signal generation and power amplification drive circuit to output signals and control the motor. The audio signal enters into audio signal amplifying process circuit to pre-process waveforms, the emitter of a triode is connected to the earth directly, so that, it works at the non-symmetrical state to intensify the differentiation of rhythms, then enters into the level testing and the rhythm signal generating circuit, the chip IC1 is an adjustable output precision serial stabilized unit to pass through end C of the IC1 to be output to a reverse amplification circuit composed of resistor R4, R5 and triode Q2 and the voltage drop reaches to the trigger voltage of chip IC2, the sine wave signal generation circuit generates 175Hz sine waves with designed R and C value and a power amplification driving circuit amplifies the signals to let the voltage Vpp reach to the rated working voltage.

Description

technical field [0001] The invention relates to a device for controlling the vibration of a motor, in particular to a device for controlling the vibration of a motor by audio frequency. Background technique [0002] At present, the working principle of vibration used in mobile communication terminals, such as mobile phones, is usually that after the vibration mode is set, when the mobile phone receives a short message or an incoming call, it starts the vibration motor inside the mobile phone to generate vibration through the vibration motor, and the vibration The methods are all fixed; because the vibration mode is fixed, it cannot produce rhythmic vibration with the music or ringtones played, so it cannot meet people's more advanced use requirements such as easy and pleasant, easy identification, etc. Therefore, technicians in this field are also constantly developing and exploring, trying to use a circuit with a single-chip microcomputer to complete this new subject, but u...

AI Technical Summary

Problems solved by technology

[0002] At present, the working principle of vibration used in mobile communication terminals, such as mobile phones, is usually that after the vibration mode is set, when the mobile phone receives a short message or an incoming call, it starts the vibration motor inside the mobile phone to generate vibration through the vibration motor, and the vibration The methods are all fixed; because this vibration mode is fixed, it cannot produce rhythmic vibration with the music or ringtones played, so it cannot meet people's more advanced use requirements such as easy and pleasant, easy identification, etc.

Therefore, technicians in this field are also constantly developing and ex

Images