capacitor

this is my 1st one

I built 4 diferent circuits on a breadbord with difernt size resistors then used a ciliscope to worke out the charging time and get a graph of the charging time.I took some pictures of the graphs i got on the ciliscope.

the first circuit had a 1uf capisitor with a 1kohm resistor.I calculated the time in ms and got a result of 500ms when observed time was the same also 500ms.i used a wire that i conected to the negative side of the diode and then touch the positive with the wire to switch it on and of and then you can see on the ciliscope what happens when you charge and discharge the circuit and at the botom of the screan it shows on the left the voltage and at the right it shows the time in ms.you can also change the volts and the seconds.if it is set to fast it is hard to read and pause.it is important to have the seting set right to get an acurate result.

The picture on the right is a photo of the result on the ciliscope I got for the second circuit I made on the breadboard.The circuit was made of a 100uf and a 0.1KOhm resistor and a 12vsupply.The time i calculated was 50ms.I calculated the time by taking capacitance x resistance x5.The observed time was 70ms the reason for that could be because of the setings being a bit wrong to fast and made the result inacurate and hard to read acuratly.

This is a photo of the third circuit result I got on the ciliscope.This circuit was made out of a 100uf capacitor and 0.47KOhm resistor and 12v power supply.The result of the time I calculated was 235ms and the observed time was 250 ms.this is a good result even though it is not a perfect result.

The picture shown here(the bottom one) is the 4th result shown on a ciliscope.The circuit was made out of a 12vsupply a 330uf capacitor and a 1KOhm resistor i calculated the time and got a result of 1650ms the observed time had a perfect result of 1650ms the reason my result was perfect is because all the setting was set correctly to give a more accurate result.
It is very important when working with capisitor to put it the corect way in the circuit negative of capasitor with negative on the power supply and positive on capasitor with the positive in the supply,if put incorectli in the circuit capasitor could explode and be dangerous.