
Electromagnetic actuator 'Solenoid' utilizing electromagnets <Comprehensive catalog available>
ケージーエス
Excellent control, responsiveness, and applicability. Widely adopted in places where reliable movement and retention are required, such as ticket vending machines.
15

LED-related trivia - Differences between direct current and alternating current, and about magnets.
グッド・グッズ (GOODGOODS)
Explanation of the differences between direct current and alternating current, as well as how both the North and South poles come together to form a magnet!