Friday, June 27, 2014

Knowing the basic laboratory equipments and componets



There are common equipments and components in the laboratory in circuits 1. We should familiarize all of them so that we'll know their uses, capacity and what are the purpose of these objects. We are given 10 elements named Capacitor, IC, Transistor, Inductor, Resistor, Digital Multimeter, Power supply and Current source.
  • A capacitor stores electric charge and is mainly used with resistors in timing circuits. It also acts as a filter by passing alternating current (AC), and blocking direct current (DC). The charge of a capacitor is measured in units called Farads. 
  • An integrated circuit (IC), sometimes called a chip or microchip, is a semiconductor wafer on which thousands or millions of tiny resistors, capacitors, and transistors are fabricated. An IC can function as an amplifier, oscillator, timer, counter, computer memory, or microprocessor. A particular IC is categorized as either linear (analog) or digital, depending on its intended application. 
  •  A transistor is a semiconductor device used to amplify and switch electronic signals and electrical power.
  •  An inductor is a passive electronic component that stores energy in the form of a magnetic field. In its simplest form, an inductor consists of a wire loop or coil.
  •  Resistor is an electrical component that reduces the electric current.
  •  A multimeter is used to make various electrical measurements, such as AC and DC voltage, AC and DC current, and resistance.
  • A power supply is an electronic device that supplies electric power to an electrical load.   

CAPACITOR

IC (INTEGRATED CIRCUIT)

TRANSISTOR

DIGITAL MULTIMETER


INDUCTOR

POWER SUPPLY

RESISTOR

















We usually see those instruments everywhere, but we didn't know their importance in our life. The different function they have could help a lot to us as a human being but thanks to those who invented them. I think by knowing those objects, we can use it now in accordance to its purpose and we need more experience through it so we are flexible where to put them and what it could bring about. 
  
 TO BE CONTINUED! :)

Saturday, June 21, 2014

Its about Charge and current with respect to time

Last time, we have our quiz and the quiz was all about the figure shown above. We, the student must determine the total charge that passed through the element of (a)t=1s, (b)t=3s, and (c)t=5s. *I'll just show you how this problem was being solve later* Actually, before we come to this kind of problem, we already encounter the same as this but different form, given and problem. When we go through to this, I've come to realize that our past math lessons are being applied to this course in order to solve it, like for example the "slope intercept form" which was taken from our college algebra and many others. . .
 The solution:


First week! First topic!

As our journey with Electric Circuit course starts, we really expect that this subject is not easy as its prerequisite. We start discussing about POWER. We all know that Power is the time rate of expending or absorbing energy, measured by watts (W). And so there was these two kinds of power which is the Negative and the Positive power, but it’s just now I know that the positive power are elements absorbs power and the negative one are the elements supplies power. Anyway, the equation in getting or solving the wattage is P=IV, so it’s just a matter between voltage and current. Then, we talks about the necessary “simple principles” of the circuit that needs to be captured by us so that we have something to look for or hold on when we’re already on the high level in acquiring knowledge, by that we are capable in understanding the problems that we will encounter soon because we already have the background regarding to this subject. We also talk about the three major parts of electric circuit and those are the Power supply/source, Conductor and Load. The reminders that I've learn: -how to keep yourself safe when it comes to handling the electricity -the outlets of electricity must be clean and not dusty -the current will flow to any conductor even to a person's body