What do
you usually think when you are asked, what is ohm’s law? If you think of a
difficult, boring, and useless topic then, you should think again. You know
why? All of us should have knowledge of electrical quantities and unit, even
the most common ones only, is important analyzing electrical circuits.
Understanding
ohm’s law,
although the three quantities, current, voltage, and resistance, are use
differently, they related to its other this relationship is know us ohm’s law.
Ohm's law state that the voltage V across a resistor is directly
proportional to the current I flowing through the resistor.
The
fundamental relationship between voltage, current and resistance - in an electrical circuit
is called Ohm’s Law. All materials are made up from atoms, and all atoms
consist of protons, neutrons and electrons. Protons have a positive
electrical charge. Neutrons have no electrical charge
while Electrons, have a negative electrical charge. Atoms are bound
together by powerful forces of attraction existing between the atoms nucleus
and the electrons in its outer shell.
Surface-mount
technology -
is a method for producing electronic circuits in which the components are
mounted or placed directly onto the surface of printed circuit boards. An
electronic device so made is called a surface-mount device.
Open
circuit -
an open circuit exists when there is a break or gap in the circuit.
Causes of open circuits;
- · broken wire
- · poor connection
- · loose terminal
- · blown fuse
- · tripped circuit breaker
- · faulty switch
- · Blown globe
Short circuit - a short circuit exists when the original path of current flow is altered and a shorter than normal path for current flow exists.
Causes of short circuits;
- · worn or damaged wiring insulation
- · wire squashed or jammed between
components
- · tools dropped across or accidental
contact between positive and negative
- · incorrectly connected ammeter
- · Active wire incorrectly connected or
joined to neutral position
AN
OVERVIEW FOR THIS WEEK
To
start let's have a recap of what we did and learned for this week.
Every
Monday, Wednesday and Friday is the class discussion and Tuesday is the
laboratory.
Last
Monday, June 23 2014 we had our class discussion. we tackled about Ohm's law
and as what i had learned Ohm's law is a current directly proportional to the
voltage and inversely proportional to the resistance.
In
every daily living we are applying Ohm's law, though we did not recognized it
but the fact is we applied circuits in our home the appliances that
we are using as well as enjoying that makes our lives become more comfortable
it has a current as well as voltage and it is important to know how it works.
On the following day our laboratory.
It was Tuesday and our professor let us familiarized the
different components ad equipment such as IC, digital multimeter,
resistor, transistor and hindi ko na alam ang iba :) hahaha. After that we find
the manufacturer, model number, type of power supply and sketch.
Wednesday
June 25, 2014 the class discussion again it was the continuation of last topic.
