* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Transformers
Power inverter wikipedia , lookup
Variable-frequency drive wikipedia , lookup
Skin effect wikipedia , lookup
Telecommunications engineering wikipedia , lookup
Stepper motor wikipedia , lookup
Electrical ballast wikipedia , lookup
Power engineering wikipedia , lookup
Current source wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Electrical substation wikipedia , lookup
Power electronics wikipedia , lookup
Distribution management system wikipedia , lookup
Power MOSFET wikipedia , lookup
Transformer wikipedia , lookup
History of electric power transmission wikipedia , lookup
Opto-isolator wikipedia , lookup
Overhead line wikipedia , lookup
Buck converter wikipedia , lookup
Single-wire earth return wikipedia , lookup
Three-phase electric power wikipedia , lookup
Surge protector wikipedia , lookup
Rectiverter wikipedia , lookup
Voltage regulator wikipedia , lookup
Switched-mode power supply wikipedia , lookup
Transformer types wikipedia , lookup
Stray voltage wikipedia , lookup
Voltage optimisation wikipedia , lookup
Laura Roach Transformers Transformers This experiment investigates if the number of turns of wire around a C-Core affects the voltage. Equipment C-Cores Voltmeter Crocodile Clips Wire Power Pack Method 1. 2. 3. 4. 5. Wrap 20 turns around the primary C Core. On each end of the wire attach a crocodile clip. Connect this C Core to the power pack. On the secondary C Core wrap a piece of wire around it 5 times. Plug this into a voltmeter, one wire into the common, and one into volts. Turn the voltmeter to Ac volts. This is because we are using an AC current. 6. Turn on the power pack and connect the two C Cores. 7. Take the reading off the voltmeter. 8. Repeat this step increasing the number of turns by 5 each time. Do this up to 40 turns. Picture Laura Roach Transformers Results Number of spins 5 10 15 20 25 30 35 40 Voltage 0.3 0.7 1.1 1.5 2.0 2.4 2.9 3.3 Conclusion A graph to show how the number of turns of wire affects the voltage 3.5 3 Voltage 2.5 2 Series1 1.5 Linear (Series1) 1 0.5 0 0 10 20 30 40 50 Number of turns I can conclude that the greater the number of turns of wire the greater the voltage. The graph shows that this increase in voltage is proportional, because the line of best fit is straight. Laura Roach Transformers Evaluation I believe that that these results are quite accurate and there are no anomalies, as the line of best fit touches every point. However to make sure that these result were correct and make sure that they were even more accurate, if I was to do this experiment again I would take at least 3 repeats and then find the average. Secondly if I was to do this experiment again, I would ensure that pieces of wire used were long enough rather than having to attach more wire to another piece to extend the wire. Whilst this is unlikely to affect the results, this could be a factor that could possibly alter the accuracy of the results, so it would be important to eliminate this factor. Thirdly, to investigate further I would carry out an experiment in which I would alter the amount of wire around the first C –Core to see if this affected the voltage as well. I would keep it as a constant number of turns though out the experiment whilst changing the number of turns around the second C-Core. I believe it would be interesting to find out if a greater number of turns around the first C-Core would give a bigger voltage on 5 turns. I predict that the larger the number of turns on the first C-Core the larger the starting voltage on 5 turns on the second C- Core, because there would be a larger magnetic field. This experiment was limited because often the wire was not long enough, if a longer piece of wire was used it would be possible to investigate the voltage with an even larger number of turns.