How does a mobile phone generate vibration?
Posted in 2023-10-27 16:17:58 in Tech Blog, 0 Comments
The principle of mobile phone vibration is a vibration effect produced by motors and centrifugal force, making it easier for people to detect incoming calls or text messages in noisy environments.
Commutation of DC motor
Posted in 2022-09-09 13:46:08 in Tech Blog, 2 Comments
The commutation of a DC motor refers to the process of changing the direction of the current when the rotating armature winding component enters another branch through the brush.
The generation of motor electromagnetic interference
Posted in 2022-05-10 08:05:09 in Tech Blog, 35 Comments
Peak voltage：come from the disconnection of brush and conmutator plate contact。 Mutation current：the sudden change of the current that flowing through the brush when it passes through the gap between commutator.
A Brief Introduction to EMI of coin Motor
Posted in 2019-07-20 17:15:02 in Tech Blog, 42 Comments
Electromagnetic compatibility In the same electromagnetic environment, the equipment can work properly under the interference of other equipment, and at the same time, it does not interfere with other equipment. Electro Magnetic Compatibility (EMC)。
EMI Solution of Baolong Motor
Posted in 2019-07-20 17:12:21 in Tech Blog, 2 Comments
Background analysis: When the motor is running, the radio frequency of different types of mobile phones will be interfered with： a. The interference of coreless motor has 3~5dB in the frequency band around...
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