How electricity works 03
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Electricity is generated from mechanical or chemical energy sources like generators and batteries. It is transmitted through power stations and substations at high voltages before being stepped down by transformers for safe distribution and use. Electricity in homes is delivered through service panels at 120V to outlets and appliances, while electronics require DC power supplies to convert the alternating current to direct current usable by devices drawing less than a lethal 1 amp of current. Ohm's law defines the relationship between voltage, current, and resistance in electrical circuits.
How electricity works 03
- 1. How Electricity Works Ken Brewer MCOMM 520
- 2. Electric sources • Generator – Converts mechanical energy into electrical engergy • Battery – Chemical Energy Generates Electricity
- 3. Stepping Down • Power Station – Sub Station – Step Down Transformer – Service Panel
- 4. Using Electricity • Service Panel to 120V outlets in your home
- 5. Electronics • DC Power Supply converts 120VAC to DC • Electronics = less than 1 amp (1 amp can kill you)
- 6. Ohm’s Law • V = I x R • R = V/I • I = V/R
- 7. Ohm’s Law • V = I x R • R = V/I • I = V/R