click below

click below

Normal Size Small Size show me how

# Lesson 1.1 - Edwin

Term | Definition | |
---|---|---|

Analog | A way of representing some physical quantity, such as temperature or velocity, by a proportional continuous voltage or current. An analog voltage or current can have any value within a defined range. | Ex. We used the analog clock to tell the time. |

Breadboard | A circuit board for wiring temporary circuits, usually used for prototypes or laboratory work. | Ex. The boy used a breadboard to make a temporary timer circuit. |

Conventional Current | The direction of current flow associated with positive charge in motion. The current flow direction is from a positive to negative potential, which is in the opposite direction of electron flow. | Ex. The technician new that the current would flow from positive to negative because it was a conventional current. |

Current | A movement of electrical charges around a closed path or circuit. | Ex. The surge of electricity caused a current in the circuit. |

Digital | A way of representing a physical quantity by a series of binary numbers. This representation can have only specific discrete values. | Ex. The girl used the digital clock to tell the time. |

Digital Multi-Meter (DMM) | A piece of test equipment used to measure voltage, current, and resistance in an electronic circuit. | Ex. The technician used the digital multi-meter to make sure the electric current was off. |

Engineering Notation | A floating point system in which numbers are expressed as products consisting of a number greater than one multiplied by an appropriate power of ten that is in some multiple of three. | Ex. The engineer used engineering notation to simplify numbers |

Kirchoff's Current Law (KCl) | The algebraic sum of all currents into and out of any branch point in a circuit must equal zero. | Ex. He used Kirchhoff's current law to calculate the sum of all the circuits currents. |

Kirchoff's Voltage (KVL) | The algebraic sum of all voltages around any closed path must equal zero. | Ex. the engineer used Kirchhoff's voltage to calculate the voltage. |

LED | Light-emitting diode. An electronic device that conducts current in one direction only and illuminates when it is conducting. | Ex. The store used LED lights to light up it's sign. |

Ohm | Unit of resistance. Value of one ohm allows current of one ampere with potential difference of one volt. | Ex. The current had to deal several Ohm's of resistance. |

Ohm's Law | Explains the electric relationship of voltage, current, and resistance. In electric circuits, I=V/R. | Ex. The engineer justified her circuit's values using Ohm's law |

Parallel Circuit | One that has two or more branches for current flow from one voltage source. | Ex. The man plugged his charger into the socket of the parallel circuit. |

Resistance | Opposition to current. Unit is the ohm. | Ex. The current met resistance when the circuit was turned on. |

Resistor Color Code | Coding system of colored stripes on a resistor to indicate the resistor's value and tolerance. | Ex. The organizer used the resister color code to label the resistors. |

Scientific Notation | Numbers entered as a number from one to nine and a decimal, multiplied by a power of ten. | Ex. The scientist used scientific notation to simplify the sum of their decimal |

Series Circuit | One that has only one path for current to flow. | Ex. The Christmas light's bud brunt out so none of them lit up because it's a series circuit. |

SI Notation | Abbreviation of System International, a system of practical units based on the meter, kilogram, second, ampere, Kelvin, mole, and candela. | Ex. The scientist wrote the kelvin of the item in SI notation. |

Solder | Metallic alloy of 60% tin and 40% lead that is used to electrically join two metal surfaces. | Ex. John works at a utility and hardware store where he sells things like solders and other tools. |

Soldering | Process of joining two metallic surfaces to make an electrical contact by melting solder (usually tin and lead) across them. | Ex. The engineer connected the circuit by soldering them both together. |

Soldering Iron | Tool with an internal heating element used to heat surfaces being soldered to the point where the solder becomes molten. | Ex. The instructor used the soldering iron while he was soldering to join the circuit. |