Pushing a button can send current into an electromagnet to magnetize an iron core and attract an iron clapper {doorbell}|. Clapper movement breaks electric circuit, attraction ceases, and spring pulls clapper back to resting position. For continuous button press, circuit completes again. Clapper goes back and forth, striking bells. For doorbell chimes, iron core attaches to spring. Clapper hits one metal tube when pressing doorbell button and springs back to hit other tube upon releasing button.
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7-Machine-Kinds-Electromechanical
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Date Modified: 2022.0224