Beginner experiment of a capacitor holding a charge
Тәжірибелік нұсқаулар және стиль
In this video, I demonstrate how a capacitor holds its charge after being disconnected from power. I found it hard to understand how this worked, and maybe this example video will help others by showing them how to try this in a simple hands-on experiment.
Equipment:
• FNIRSI DSO-TC3 Oscilloscope (amzn.to/4ejXIGu)
• Variable DC power supply (amzn.to/4c4JEi0)
• Analog IC kit (amzn.to/45gbMfK)
• ELEGOO Upgraded Electronics Fun Kit w/Power Supply Module, Jumper Wire, Precision Potentiometer, 830 tie-Points Breadboard Compatible with Arduino, STM32 (amzn.to/45kRxxC)
• InSwan overhead document camera (amzn.to/3VsZgoN)
Books:
• "Timer, Op Amp & Optoelectronic Circuits & Projects" by Forrest M. Mims III (amzn.to/3x5G0pf)
•"Electronic Formulas, Symbols & Circuits" by Forrest M. Mims III (amzn.to/4bUE5CZ)
Disclaimer: As I navigate through these circuits as a learner, please note that I'm not an expert. However, I believe sharing this example could be beneficial for others interested in electronics.
Пікірлер: 1
The red LED needs about 1.5 to 1.6 volts to turn on and conduct. Below that, the LED does not conduct so it doesn't discharge the capacitor all the way. Standard silicon diodes need about 0.6 to 0.7 to turn on. It varies by the type of diode or LED. Since you have an o'scope, you could pick a higher value of resistor and show the charge and discharge curve of the capacitor and resistor combination. Pick values that will give a time constant of one or two seconds and a slow sweep speed on the scope.