CIRCUITS

March 9 2011 - March 11 2011

    First week of 4841 Electrical & Electronics, we learned some basics of electrical and circuits.

    The basic elements of electricity are Volts, Ohms, Amps and Watts. Volts is the pressure to make electrons move in a circuit; Ohms is the resistance to reduce the current flow and voltage in a circuit; and Amps is how many and how fast the electrons can move in the conductor; Watts is the unit of how much work has been done.

    After we known these basic things of electricity, we moved on to several  types of electrical circuits.

    Before we set up some electrical circuit, there are several things that we need to know, how to measure Available Voltage, Voltage Drop, Amps, and Resistance.
   
    -Available Voltage is the  voltage that is availabe for a consumer to use, we use black lead of a multimeter attach to good earth, and positive lead attach to the point we need to measure.
  
    -Voltage Drop is how many voltage that been used by a components in a circuit, that we use the meter leads touch the wires on both sides of the component in circuit.

    -To measure the Ohms of a components, we need to separate it from the circuit, and use red lead touch the positive side and black lead touch the negative side of the component.
   
    -To measure the amperage in circuit, first we need to move the positive lead into the DC amp position, then we must brake the circuit and use the red lead touch positive side and black lead attach negative side of the circuit, so the current can flow into the meter.