Lesson-2.C-COMMON-ELECTRICAL-SYMBOLS.pdf

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1. COMMON
ELECTRICAL
SYMBOLS
PREPARED BY: MS. KIM CHRISETTE M. REYES

2. What is the
importance
of symbols?

3. In electricity we also
have symbols which we
use in drawing
schematic diagram.

4. SCHEMATIC
DIAGRAM

5. PICTORIAL
DIAGRAM

11. Conductor/ Wire
•A conductor is an object or
type of material that allows
the flow of an electrical
current in one or more
directions.

14. Switch
•A device that
connects and
disconnects a circuit
from a line.

18. Connected Wires

21. Circuit Breaker
•A device used
to interrupt an
electrical circuit.

25. Cell
•Is a device that is used to
generate electricity, or one
that is used to make
chemical reactions possible
by applying electricity.

28. Capacitor
•Is known as capacitance. Is
a component which has the
ability or “capacity” to store
energy in the form of an
electrical charge.

32. Resistor
•Used to reduce current flow,
adjust signal levels, to divide
voltages, bias active elements,
and terminate transmission
lines, among other uses.

36. Battery
•Is a device consisting of one
or more electrochemical
cells with external
connections provided to
power electrical devices.

37. Cell -Battery
•The difference between a cell
and a battery is that a cellis a
single unitthat converts
chemical energy into electrical
energy, and a batteryis a
collection of cells.

40. Fuse
•Is a device that
automatically melts in
cases of abnormal
conditions like overloads
and short circuits.

41. Fluorescent Lamp

43. Incandescent Lamp

45. Did you
know that…

46. There are a lot of symbols
that we need to know in this
world, but there is one which
we should put in our hearts
first, especially for us
Catholics.

47. The crucifixis a symbol of
sacrifice, that Jesus died for
the sins of the world. It
represents the focal point of
the Catholic belief: Jesus died
on the cross to redeem
humanity.