schematic symbols

battery (definition)

one or more electrochemical cells that convert stored chemical energy into electrical energy

capacitor (definition)

passive two-terminal electrical component used to temporarily store energy in an electric field. Size of capacitor is measured in microfarads (uf).

photoresistor (definition)

resistor whose resistance changes with changes in the light (light dependent resistor)

LED (definition)

semiconductor light source

diode (picture)

(closed triangle)

photoresistor (picture)

(no arrows outside circle)

variable resistor (picture)

(no line through middle, instead pointing down on top of zigzag)

battery (picture)

(short line-negative, long line-positive)

ground (definition)

A common return path for electrical current, referred to negative side of a battery or power source in electricity

resistor (definition)

a device designed to add resistance to a circuit and to slow down the flow of electrical current

variable resistor (definition)

a device used to change resistance in a circuit

schematic symbol

a pictogram used to represent various electrical and electronic devices (wires, batteries, resistors, transistors) in a schematic diagram of an electrical or electronic circuit

diode (definition)

a type of two-terminal electronic component with a nonlinear current-voltage characteristic, allows an electric current to pass in one, while blocking current in the opposite direction

switch (definition)

an electrical component that can break an electrical circuit, interrupting the current or diverting it from one conductor to another

Integrated Chip (definition)

an entire electronic circuit with diodes, transistors, wires, etc. built into a small piece of silicon; can be used for many different applications