IB Design Technology Topic A3.4.13: Circuit Diagram Symbols and Components Key Definitions

An electronic component that stores and releases electrical energy by holding an electric charge between two conductive plates.

Circuit diagrams are visual representations of electronic circuits, using symbols for components and lines to show connections.

An electronic component that allows current to flow in only one direction, acting like a one-way valve in a circuit.

An electronic device that amplifies weak signals.

An electronic switch that is activated by a current or signal to open or close another circuit, allowing a low-power signal to control a high-power circuit.

An electronic component that limits or controls the flow of electric current in a circuit.

An electrical component that is used to connect or disconnect the flow of electricity in a circuit, allowing control over whether the circuit is on or off.

A semiconductor device with three connections that can regulate current or voltage and is commonly used for switching or amplifying signals in electronic circuits.