1.3 KiB
1.3 KiB
Glossary
Volts
Voltage
Amperes
Current
Ohms
Resistance
Watt (Power)
Power = V * I = \frac{V^{2}}{R} = I^{2}R
Joules per Second
| Term | Symbol | Weight |
|---|---|---|
| Nanowatt | nW | 10-9 |
| Microwatt | $\micro$W | 10^{-6} |
| Milliwatt | mW | 10^{-3} |
| Watt | W | 10^{0} |
| Kilowatt | kW | 10^{3} |
| Megawatt | MW | 10^{6} |
| Gigawatt | GW | 10^{9} |
Examples:
| Device | Power |
|---|---|
| Arduino | 167mW |
| Laptop | 1.5W |
| House | 2.2kW |
Ohms Law
V = \frac{I}{R}
Impedance
= Resistance for Nerds
Current
How many electrons flow through a circuit in a second
Polarity
Means if a component is symmetric or not Polarised means that a component is not symmetric
Voltage Divider
Farad
| Term | Symbol | Weight |
|---|---|---|
| Picofarad | pW | 10^{-12} |
| Nanofarad | nF | 10^{-9} |
| Microfarad | $\micro$F | 10^{-6} |
| Milifarad | mF | 10^{-3} |
| Kilofarad | kF | 10^{3} |
LED
Anode - The shorter Leg Cathode - The longer Leg
Diode
Anode
The positive end of a diode
Cathode
The negative end of a diode
Conventional Current Flow
When electricity was discovered people thought the electrons flow from the positive terminal to the negative, in actuality they flow in the opposite direction, but it is still possible to calculate the flow with the old way.