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Glossary

Basic Electronic Terms
Ampere The unit of measurement of electrical current flow (see Current).
Battery A group of individual cells connected together to provide the required voltage.
Capacitor An electronic component that can store energy.
Cell A single unit of a battery.
Circuit A group of components powered by a voltage source to perform a specific task.
Conductor A material that allows the flow of electrical current.
Current The movement of electrons through a conductor.
Insulator A material which doesn't conduct electrical current.
LED A semiconductor device that emits light when an electrical current is applied.
Load A device, component or system to which a voltage is applied .
Ohm The unit of measurement of resistance.
Ohm's Law The relationship between voltage (E), current (I) and resistance (R) in a circuit.
Parallel Circuit A circuit that has more than one continuous path for electrons to flow.
Photon A particle of light.
Photovoltaic Effect The generation of an electrical current by a photosensitive device.
Resistance The opposition that a material offers to the passage of an electric current, measured in ohms.
Resistor An electronic component designed to oppose an electric current.
Schematic Diagram Illustration of a circuit with the components represented by their symbols.
Semiconductor A solid material that has electrical conductivity in between a conductor and an insulator.
Series Circuit A circuit that has a single path for electric current to flow through all of its components.
Voltage The electrical entity which is the cause of current flow.
Volt The unit of measurement of electromotive force.
Watt's Law The unit of measurement for electrical power, P = V x I where P is the power in watts, V is the potential difference in volts and I is the current in amperes.

 

Other Terms
Appropriate Technology Technology designed to consider the environmental, ethical, cultural, social and economical aspects of the community it is intended for.
Fixture A device that holds a piece in place during machining.
Isometric Drawing A pictorial drawing in which all the axes form angles of 120 degrees with the plane of projection.
Jig A device that helps guide a tool for machining.
Logo A graphic used to identify a brand, organization, or other entity.
Orthographic Drawing A drawing that shows the front, side and top views of an object.
Prototype A full scale working model of a design.
Sustainability The capacity to maintain a certain process or state indefinitely.