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Risistor
Resistors determine the flow of current in
an electrical circuit.
Light Dependent Resistor (LDR)
LDRs or Light Dependent Resistors are very
useful especially in light/dark sensor circuits.
Transistor
Transistors can be regarded as a type of switch,
as can many electronic components.
Variable Resistor (Trim Pot)
Dark/light and temperature sensors usually have
these components, as the potentiometer / variable
resistor allows the circuit to be made more or less
sensitive (they can be turned up or down reducing or increasing resistance).
Diode
A diode allows electricity to flow in one dir ection
only and blocks the flow in the opposite direction.
Switch
This switch is common on many electrical devices.
For example they are found on computer units for
turning them on and off.
PCB
Motor
The software allows the circuit designer to build a
circuit on the screen of a computer rather than
building a real circuit out of expensive
components.
2
Capacitor
A capacitor (originally known as a condenser) is a
passive two-terminal electrical component used to
store electrical energy temporarily in an electric
field. The forms of practical capacitors vary widely,
but all contain at least two electrical conductors
(plates) separated by a dielectric (i.e. an insulator
that can store energy by becoming polarized). 2
Integrated Ciruit (IC)
Digital integrated circuits can contain anywhere
from one to millions of logic gates, flip-flops,
multiplexers, and other circuits in a few square
millimeters. 1