Title
: Do some research about the Relay and preparing presentation slides by using
Microsoft Office PowerPoint.
Objective
: 1) To study about the Relay.
2) Finishing the presentation slides and submits
a draft to the Supervisor.
Content
/ Procedure : 1) Search about Relay
specification.
2) Preparing
the presentation slides and do some editing on the proposal.
Results / Analysis :
1) There are 4 parts in every relay:
·
Electromagnet
·
Spring
· Set of electrical contacts
2)
The following figure shows these four parts
in action:
·
A relay consists of two separate and
completely independent circuits.
·
The first is at the bottom and drives the electromagnet. In this circuit, a switch is
controlling power to the electromagnet.
·
When the switch is on, the electromagnet is
on, and it attracts the armature (blue).
·
The armature is acting as a switch in the
second circuit.
·
When the electromagnet is energized, the
armature completes the second circuit and the light is on.
·
When the electromagnet is not energized, the
spring pulls the armature away and the circuit is not complete. In that case,
the light is dark.
3)
Several variables to be control when
purchasing relay :
·
The voltage and current that is needed to
activate the armature.
·
The maximum voltage and current that can run
through the armature and the armature contacts.
·
The number of armatures (generally one or
two).
·
The number of contacts for the armature
(generally one or two -- the relay shown here has two, one of which is unused).
·
Whether the contact (if only one contact is provided) is normally open (NO) or normally closed (NC).
Relay
circuit diagram
.jpg)
A simple
relay circuit
Conclusion: From the
research, the relay 5V 5pins is suitable to be used in this project. It will
act like a switch.
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