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Electric Current - Coggle Diagram
Electric Current
Pioneers and Units
Thomas Edison (Light bulb / Phonograph)
Alessandro Volta (Volt / Battery)
André-Marie Ampère (Ampere)
Georg Ohm (Ohm / Ohm's Law)
Michael Faraday (Farad / Induction)
Nikola Tesla (Tesla / AC System)
Simple Circuit Components
Power Source (Battery)
Conductors (Wires)
Load (Lamp or Motor)
Switch (ON/OFF Control)
Fundamental Concepts
Voltage (V): Electrical pressure
Current (I): Flow of charge
Resistance (R): Flow opposition
Ohm's Law: V = I * R
Modern Lighting
CFL (Compact Fluorescent)
LED (Light Emitting Diode)
OLED (Organic LED)
Smart and Adaptive Lighting
Safety and Protection
Circuit Breakers
Thermal-Magnetic Protection
Differential Protection
Safety Practices
Lockout/Tagout (LOTO)
PPE (Insulated gloves/eye protection)
Proper discharging
Body Effects
1-5 mA: Tingling/Disturbing
20 mA: Let-go range
30-100 mA: Respiratory arrest
2-4 A: Cardiac arrest
Circuit Types
Series Circuit
Single current path
Failure breaks circuit
Sum of individual voltages
Same current throughout
Parallel Circuit
Multiple current paths
Branches work independently
Same voltage across branches
Current splits by resistance
Measuring Tools
Multimeter
Handheld (Portable)
Bench (Precise Laboratory)
Oscilloscope
Visualizes electrical signals
Displays waveforms