Visualising Voltage, Amplitude, and Frequency Relationships in 3D

We’re often stressing how a vibration motor’s voltage, vibration amplitude, and vibration frequency are interrelated – essentially the voltage controls the motor speed which in turn directly affects the frequency and amplitude. Application Bulletin 029 covers this in full. Other factors obviously help determine the profile Continue reading

VAB-02 : How Do Vibration Motors Work?

This VAB introduces how ERM vibration motors work, including how they create vibrations and what determines the vibration frequency and amplitude. It draws from our previous AB-004: Understanding ERM Vibration Motor Characteristics. These concepts are much easier to understand when you see everything in motion, so Continue reading

Video: Vibration Motor Synchronisation

A previous article discussed the theory behind why running multiple eccentric rotating mass vibration motors synchronise. Today we have uploaded a short video showing the results in practice: It’s definitely worth noting some of the constraints before using this as the foundation for a design. First, Continue reading

Vibration Frequency vs Displacement

Is there an ideal frequency for vibration alerting or haptic feedback? Different nerves in our skin are more sensitive to different frequencies, but generating vibrations at these frequencies may not be quite so simple. As the vibration frequency increases, the duration of time for the force to be Continue reading

Using The Hall Effect to Drive Brushless Motors

What makes brushless vibration motors long life? The clue’s in the title! The precious metal brushes are typically the most common source of failure that limits the lifetime of normal DC motors. They are integral to the operation of our eccentric rotating mass vibration motors in the ‘Vibration Motor’ Continue reading