I've acquired a variable resistor and am currently trying to measure capacitance values of 4.7uf to 470uf. Certainly, the bridge does work when I try to measure 470uF with a 1-10 ohm pot.
However, I can't seem to adjust it to reach complete zero. 0.003 mA is sufficiently small right?
My...
Sorry, let me rephrase that.
I understand that the current will be split between the two sides of the bridge, and that the sum of the p.d across the Rv and R1 will be split according to their impedance. A low resistance would lead to large current. However...
I don't quite get this...
I get that 10 amps = bad, but I'm not too sure of the concept behind it. Is it because of the high impedance provided by the capacitor? I do hope you can make things clearer for me.
Anyway, I figured out that the 0.1uF capacitor I am using isn't sensitive enough to changes in temperature, not...
I'm sorry, but what is current draw?
I tried lowering my frequency to about 150, then used 0.1ohm for R1 and 200 for R2, but the multimeter couldn't seem to detect changes in the current significantly. Does this have something to do with current draw?
Apologies for the late reply.
As a matter of fact, my pre-U school syllabus has not covered anything about circuits in depth yet.At the moment, I have only learned the basics such as parallel and series resistors in circuits, as well as the concepts of current, voltage and resistance...
According to my supervisor, seeking advice from experts is okay as long as they do not do the project for me, i.e. tell me exactly how to do my experiment.
It's not like you are doing the experiment for me, anyway. Ultimately, I'll be the one doing the data processing/collection myself, as...
I'm sorry, but could you explain it in simpler terms? What is this "pulse oscillator"?
I don't expect you to give me everything, but I really have no experience in circuitry and so I'd appreciate it if you could help me understand a bit more.
Just wondering, could I in any case use a...
Thank you for your swift responses.
By "test circuit", do you mean something like figure 14 in this:
http://webpages.ursinus.edu/lriley/courses/p112/labs/node7.html"
...in which I may use equations 19 & 20 to derive the value of C?
I am no university student and have scarce knowledge...
Hello,
I am new to this forum (and no physics expert). I apologize if this topic is in the wrong place, but I would really appreciate help on the abovementioned topic.
I am investigating the effect of temperature on the capacitance of capacitors for a school project. Since C =...