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How To Wire A Doorbell Essay

1737 words - 7 pages

Anyone can wire a doorbell if he follows these steps and safety precautions. Modern day doorbells use transformers to supply power to the circuit. One can wire up a doorbell if they use safety precautions, follow instructions,and the proper materials to wire it with.
Take safety precautions by using the correct tools which includes screwdrivers,wire strippers,electrical contact cleaner, fine sandpaper, rubbing alcohol, and a cotton swab or old toothbrush although door bells don’t use much voltage(Brooks). Make sure to turn off the circuit breaker that supplies power to the old doorbell. Even though most doorbells are wired with a low-voltage transformer, there is still the danger of electric ...view middle of the document...

If a transformer is faulty then de energize the circuit and remove and replace the transformer at the same voltage and wattage(3). Electrical information is stamped on the back of the transformer you should find installation instructions on the package follow the instructions carefully(4).
A doorbell is a signaling device mostly placed near an entry door to a building when a visitor presses a button the bell rings inside the building alerting the occupant to the presence of the visitor(Eyewitness Electricity) . The first door bells were mechanically activated by pulling acord now modern doorbells are electric they are activated by an electric switch(5). Ringing a bell at the same time a gap opens between the contact spring and the screw which breaks the circuit and switches off the electricity(King). The magnetism disappears the spring on which the armature is mounted moves the armature back into its original position the contacts touch and make the circuit again the process is repeated until the button is released(7). Disable electricity. Make sure that circuits that supply electricity to the old doorbell & chime are turned off. To make sure to use a circuit tester to check for the presence of any power in the device(King).Turn off the power before you start working on the doorbell when the bell doesn’t ring look at the circuit breaker or fuse box(13).
William Murdoch a scottish inventor installed many of his own inventions in his house one of those inventions was invented in Birmingham in 1817 was a loud doorbell that worked by using a pipe system of compressed air after that Joseph Henry around 1831 invented the electric doorbell for the purpose to be rung from a distance(Doorbell). German scientist Georg ohm discover that there were no perfect electrical conductors that each type of substance even the best metals put up a resistance to the current ohm showed that a long wire had more resistance than a short one of the same mental and thin wires had more resistance than fat ones also in a circuit the more potential difference needed to push current through the wire (3). Scientists experimented with batteries thats when they discovered that some substance allow electric charge to pass through them without much difficulty while others would not they was called conductors and latter insulators some substances will conduct because all matter is made up of atoms which is made up of particles called electrons orbiting around the nucleus(10). Since the time of sturgeon and henry electromagnets have been central components in electrical machines their power to attract and hold iron - convenient way of turning electrical energy into rotary motion using the forces of magnetic attraction and repulsion in electric motors(How to Wire a New Doorbell).
When the current is turned on the electromagnet attracts a piece of iron known as the armature which can switch a separate electrical circuit(6). Wired doorbells have a bell with a transformer on it...

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