ABSTRACT;
Electronic design is one of the major subjects that forwarding the
skills of using the PROTEUS 7.1 version and imply to the board exactly until it
will produce an output that desired followed by the sequence step like print
the design’s circuit, film process, drill the negative with CNC Machine,
etching process and soldering for finally step.
For this semester, I’m needed to solve a design of electronic circuit
where it must to fulfill of acceptance with both party, which mean between me
and client. The project name is BATTERY TESTER.
OBJECTIVE;
Roughly, the objective of this
project is to develop an electronic design which inculcates analytical thinking
and know how to operate both software that involved in order solving problem
based on real application environment. This Battery tester’s
project will be applied several of electronic components and achieved a input
where it must differentiate a voltage between 9.5 dcV until 13.5 dcV .
PROJECT INTRODUCTION;
Battery tester.
I’m
proposing to study the given layout circuit diagram and achieve the same
functionality of available product with a return price of RM8 including the
labor charge.
1 List of expectation (list of tasks);
This is a
list that presents a basic description of the product’s function. The list is
set after a discussion between clients and my company. The list is organized in
a contract form. It presents the characteristic of my product that should be
fulfilled by the designer so that the client accept to buy, in other words, it
will be satisfy both party in term of functionality.
Notice: if the product fails to fulfill at least
one point from the list expectation, the client has the right to refuse buy the
product and face the designer and the company with a heavy penalty.
1. The product function as a car battery
tester and car alternator for a standard car (car battery is usually 12Vdc).
2. The product informs the user with the
following information ;
a)
The
battery is totally discharge (the voltage between poles is less than 9.5V).
b)
The
battery is partially discharge (the voltage between the battery poles is
between 9.5V and 11V).
c)
The
battery is normally charged (the voltage between the battery poles is between
11V and 13V).
d)
The
vehicle is in motion, the alternator provides a sufficient current and the
voltage between the battery poles is superior to 13.5V. (It does not exceed
15V).
3. The product should process testing
points and a connector that permits the diagnosis of the circuit during the
fabrication phase.
The practical work;
The design is organized o five basic
modules that are imperatively obeyed;
1. Study the list of expectation.
2. Prepare functional critical analysis
of the given solution by decoupling the project to functional block, listing
their component, placing of the related block with respect to the general
circuit diagram of the project.
3. Study and design each functional
block separately.
4. Compose the measurement table, which
include my result, stress on the method that you choose to test each functional
block. Compare my result with the list of expectation list.
5. Conclusion on the mentioned results
and suggest the possible upgrading methods.
Note: An
important attention should be given to the testing phases and the used tools
for these testing (table of
theoretical value, table of measurement, comparison between the measured
reading and the theoretical value.)
Equipments:
Software (ISIS 7 &
ARES 7), PCB Negative Board, CNC Driller Machine, Accubalet,
Blue Film, Green Film, UV
Light Machine, Potassium Carbonate, Etching Prelim Chloride, Stripper, PCB Cutter, Laminate Machine.
Components:
1 X Connector
1 X 7805 Positive Power
Supply Regulators
6 X Resistors (3k, 3k6,
9k1, 8k2, 15k & 10k)
3 X LM741 Operational
Amplifier (OP-AMP)
3 X Base for LM741
3 X LED (RED, YELLOW,
GREEN)
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