22. COFFEE MAKER We will look inside a typical drip coffee maker so you can understand exactly what is happening when you make coffee .
23. A modern drip coffee maker is a surprisingly simple device. Manufacturers have had 25 years to hone their designs, so these coffee makers are pretty straightforward once you open them up. The warming plate Where the hot water drips into the ground coffee
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25. INSIDE THE COFFEE MAKER The view inside the bottom of the coffee maker The depression on the right-hand side of this figure is the bottom of the bucket. The orange tube in the center is the hot-water tube (it connects to the black tube that we saw in the previous picture). The other orange tube picks up cold water from the hole in the bucket
34. INSIDE A WASHING MACHINE If we take a look under the washing machine, you'll see what makes it so heavy Yes, that is in fact a block of concrete in the picture above. The concrete is there to balance the equally heavy electric motor, which drives a very heavy gearbox that is attached to the steel inner tub. There are lots of heavy components in a washing machine.
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37. Vibration-damping system A laundry machine has a damping system that uses friction to absorb some of the force from the vibrations.
41. Controls Cycle switch The controls for this machine were designed before microcontrollers were being used in appliances. In fact, there is not a single resistor or capacitor in the whole machine. Inside the cycle switch
42. CONTROLS Speed and temperature control switches Water level control switch
53. Start it Up The classic fluorescent lamp design, which has fallen mostly by the wayside, used a special starter switch mechanism to light up the tube. You can see how this system works in the diagram below. When the lamp first turns on, the path of least resistance is through the bypass circuit, and across the starter switch . In this circuit, the current passes through the electrodes on both ends of the tube. These electrodes are simple filaments , like you would find in an incandescent light bulb. When the current runs through the bypass circuit, electricity heats up the filaments. This boils off electrons from the metal surface, sending them into the gas tube, ionizing the gas.
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55. Inside the casing of a conventional fluorescent starter there is a small gas discharge lamp.
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58. Rapid start and starter switch fluorescent bulbs have two pins that slide against two contact points in an electrical circuit.
59. The ballast, starter switch and fluorescent bulb are all wired together in a simple circuit .
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