Today I figured out how to wire a circuit in Series Parallel I found it was possible by first wiring  2 bulbs in parallel and then add in the series bulb. so 3 bulbs are running 

3 bulbs running in series parallel

Close up of wiring in series parallel. Power is drawn from right of image and

returns back by bottom left black wire

I also completed the workbook and found that in this layout the bulb that is wired in series uses most of the voltage and glows brightly, then when it reaches the parallel bulbs it gets split in evenly and glows dimly between the two bulbs.
I also found with the calculations, that they are a lot easier then I first thought as long as you have  the correct data and know the correct formula for what you are working out. 


This completes the Practice on Electrical circuits.


Logic Probe Construction 
Also today I began Work on building a Logic Probe that will be used in the Fuel systems practical.
I completed the first step in building a probe, which was soldering a 1K ohm resistor and a red LED to the black wire and another 1K ohm resistor and a green LED to a red wire.

Showing LEDs, Resistors and Wires soldered together

The part where I had to be most careful was getting the LEDs around the correct way, as there is a positive and negative terminal on them. you can tell this by the length of the "legs" 

Picture showing length  of legs  Longer one or the anode is +
 and shorter one or (k)cathode is -  

 on the red wire the shorter leg is soldered and on the black wire the longer leg is soldered to the resistor.


On Tuesday next week I will complete the probe.

Today we figured out how to set up 3 bulbs in a series correctly we found that each bulb has to connect into the next one like so: 

Picture showing path of wires when 3 bulbs are in series,
top right (Red) is source of voltage and bottom right (black) is wire to ground

We also did the 3rd circuit on the lab sheet Which was a parallel circuit. When we checked it with the Multimeter we found that both bulbs in the circuit have the same available voltage because voltage does not have to be distributed between components because each bulb has its own path. This also means that If one is disconnected from the circuit the other will keep going. 

Tomorrow We are going to do the last circuit which is 3 Bulbs in Series Parallel 

Today we began the Electrical Circuits workbook in it I will be going over Individual, series, Parallel and series parallel circuit layouts.
Today we went over the first circuit layouts Individual, and series we learnt how to correctly get supply voltage and voltage drop With a multimeter.


when getting supply voltage you only move the positive lead to each component and keep the negative on the earth or ground of the circuit. when getting voltage drop both leads need to be moved to either side of the component being checked.  

Voltage drop being measured by multimeter in this image the
voltage drop is  being measured on  ground wire

 We found it difficult to have 3 bulbs running when we put the circuit in series but managed to get 2 bulbs running correctly and found the voltage was evenly split between the 2 bulbs tomorrow we are going to try getting 3 running correctly.

Circuit set up in series correctly using 2 bulbs

Possibly Incorrect because 3rd bulb is much dimmer