Basic Electronics Electrical Principles and Functions of Components
| Language | English |
| Pages | 36 |
| Size | 2.33 Mb |
| <<< Click here to free download | |
Basic Electrical Principles
• Conductors - keep loose grip on their electrons and allow electrons to move freely. Metals are usually good conductors.
• Insulators - keep close hold of their electrons and do not allow free movement of electrons. Glass, wood, plastic, mica, fiberglass and air are good insulators.
• Electromotive Force (EMF) is the force that moves electrons through conductors. Its unit of measure is the Volt. Think of it as similar to a pressure.
• Voltage Source - has two terminals (+ and -). Some examples are car batteries (12 volts DC), D cell batteries (1.5 volts DC) and a wall socket (120 volts AC).
• Current - is the flow of electrons. It is measured in amperes. (Convention – current sign is – to electron velocity)
• Resistance (ohms, Ω) is the ability to oppose an electrical current.
• Conductors - keep loose grip on their electrons and allow electrons to move freely. Metals are usually good conductors.
• Insulators - keep close hold of their electrons and do not allow free movement of electrons. Glass, wood, plastic, mica, fiberglass and air are good insulators.
• Electromotive Force (EMF) is the force that moves electrons through conductors. Its unit of measure is the Volt. Think of it as similar to a pressure.
• Voltage Source - has two terminals (+ and -). Some examples are car batteries (12 volts DC), D cell batteries (1.5 volts DC) and a wall socket (120 volts AC).
• Current - is the flow of electrons. It is measured in amperes. (Convention – current sign is – to electron velocity)
• Resistance (ohms, Ω) is the ability to oppose an electrical current.