It has been a while since I started studying about motors, actuators, solenoids and PWM power control with Arduino. My plan is to use Arduino to control the force frequency of a solenoid actuator, allowing a sweep from forces from 1 Hz to 200 Hz. Not sure if that will possible, though, I am still experimenting/studying.
Anyway, I bought a solenoid actuator from China (AliExpress) and decided to test it today. I just plugged it into a DC adapter I bought specifically for this (with appropriate voltage and current ratings).
But I got surprised when the solenoid keeps pushing and pulling while connected to the power. I thought that should only happen with the power was shut down or something like this, as this is what I did some time ago while dealing with solenoid water valves (they only close/open when power is off/on).
I already measured the voltage from the DC adapter, and it is stable at 12V.
What am I missing here guys? Is there any chance this solenoid has some feature which makes it turn on and off? I tried to look for specs using the model number, but it was unnsuccesful.
Youtube video of the testing: Solenoid testing Solenoid specs: Voltage: 12VDC, Current: 2.5A, Stroke: 10mm, Force: 55N DC adapter specs: INPUT: 100-240V~ 50-60Hz Max.0.8A / OUTPUT: 12V 2.5A Similar solenoids I bought, but different specs (original seller does not exist anymore): AliExpress, Amazon