Nowadays, we have double chimes, musical bells, and wireless bells. Find out how these work
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Answer:
• Double Chimes : Most wind chimes feature tubes of varying lengths suspended in a circle from a platform by strings or wires. When the wind blows, the tubes bump into an object in the center, called a clapper, and against one another. Many wind chimes are made from metals, such as aluminum and copper, and wood.
• Musical Bells :Touch controlled music bells have a circuit. This circuit produces a musical tone whenever someone touches the touch point designated as TP in the circuit. The circuit works from two AA cells and produces enough sound. The circuit uses IC UM 3481 commonly used in musical circuits.
• Wireless Bells : Wireless doorbells, require a radio signal that gets transmitted when the button is pushed. The signal gets picked up by a receiver, which then triggers the chime, light or buzzer of the doorbell. In many cases, wireless doorbells have variable frequencies to reduce disruption from nearby doorbells.