Friday, 6 March 2015

Week 5 (6/3/2015): Final week!

Today is the last week of our project. With all of our tests now done, we focused on two things: the final high power design and the poster. In our testing we found that the high pass L network gave much better performance than any of the other designs, so we chose this as the basis of our finished network.

Next we researched some high voltage components for use in building the high power version of the circuit, including this giant capacitor:

Overall our project has been a success. While some of our circuits didn't work out, most of them worked quite well. Our final design works especially well, managing 8 volts out with only 2 volts in.

Monday, 2 March 2015

Week 4(27/2/2015) High-pass network with two levels of discharge models

We started our 4th week design and build the circuits with the given discharge models , we also substitute for a  higher frequency generator which is up to 15Mhz to test the circuits that we build before.  The result is as same as we did with 1MHZ frequency. Additionally, we calculated the load resistance and then test the circuits with L, pi, LCC and T network. 
Discharge models


In the process of calculating the result, there is one problem, because the limitation of components(the value is too big that we cannot find), we only test the L type of circuit for the level 1 load and L,LCC circuit for the level 2 load.
 In the morning, we got the new generator from the tutor, which maximum frequency is 15Mhz. Then we rebuild the circuits that we tested last before, and used new generator to test the behavior of the circuits with higher frequency.  After testing the circuits we build last week, we started to test the circuits with new model.  In the process of testing, we add the inductor to replace imagine part in the calculation to test the difference when there is no inductor added.
L circuit 
retesting the L circuit before with higher frequency

LCC circuit with level 2 load

testing LCC circuit with level 2 load