Batteries.


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Inside a 9 V are 6-1.5 V power cells joined in succession. Parts of a ... Famous for compact gadgets (PDAs, IPod) Diode. Made of semi-leading ...
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Slide 1

Batteries Physics

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Power Cell Device for putting away synthetic vitality and afterward discharging it as power when current is required

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Battery More than one force cell cooperating

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9 V battery Inside a 9 V are 6-1.5 V power cells associated in succession.

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Parts of a Power Cell 1. Anode Metal High proclivity for oxygen Draw oxygen from cathode to end up oxidized

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Parts of a Cell 2. Cathode Metallic oxide Lower fondness for oxygen Becomes diminished when oxygen is taken

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Parts of a Cell 3.Separator Insulator Keeps cathode isolated from anode to control response

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Parts of a Cell 4.Current Collector Connected to anode and cathode Good transmitter 5.Electrolyte Usually fluid (ionized water, corrosive/base) "Domino Effect" of oxygen from cathode to anode

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Operation of Power Cell As anode gets to be oxidized, an electron must be surrendered Electron courses through anode\'s ebb and flow gatherer  through circuit (outside of battery) as electrical ebb and flow  back to cathode\'s ebb and flow authority

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Carbon-Zinc (C-Zn) 1.5 volts Works well if utilizing 100 mA or less Low limit 3 year time span of usability

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Alkaline 1.5 V: lose voltage step by step High Capacity (electrical vitality) Last more 5 year timeframe of realistic usability Better in high deplete gadgets than C-Zn

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Lithium Started off as catch cell Anode: lithium Cathode: magnesium dioxide 3 V: Takes up less space with more voltage

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Lithium High Capacity Low Drain Rate Toxic: Special transfer Light Weight

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Button Cell Anode: Zinc or Lithium Cathode: Silver or Mercury Oxide Compact Large Life

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Recharging Batteries A momentum from an outside source is pushed through the cell the other way from the first ebb and flow Oxygen goes from anode to cathode

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Nickel-Cadmium (Ni-Cd) 1.2 Volts Low limit Memory impact (Rechargeable) If you re-charge the battery too early, you bring down its ability

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Nickel-Metal Hydride (NiMH) 1.2 V Best rechargeable battery High Capacity Good for high waste gadgets

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Lithium-Ion 3.6 V Slow-loss of charge (5% every month) Best vitality to weight proportion No memory impact Popular for versatile hardware (phones, IPod)

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Diode Made of semi-leading material Only allows ebb and flow to go in one bearing L.E.D.: light emanating diode Longer leg must be associated with positive side of circuit (cathode)

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