Recent content by sepoto

Alright so I'm looking at the specifications of an inductor right now and it says 100uh 3A. Does that mean I shouldn't run more than 3A through it...

I did an exercise today on my breadboard with an inductor that I made from a coil of 22 gauge stranded hookup wire wrapped in a helix coil around a 60d nail I found in my garage. The power source was a 9V battery. I took a measurement of just the battery fully open with my digital volt meter and...

Thank you very much! I could not have asked for a better answer. Not only did you identify the component for me you also told me what is was for. I've been doing a lot of research on induction on Wikipedia.

I have been studying the plans for a few AC to DC converters and I understand that the basic conceptual design is one where the AC power is transformed to lower the voltage and is then passed through a bridge rectifier to convert that power to what I call hopping DC. The power is then smoothed...

If I could the find a 165 ohm resistor that would be right on target to 18~ma if I'm correct. I see how you have factored this now. I have learned a lot from this and I thank you very much!

I see your point about the voltage drop however in this case the out pin of the LED leads to a ground so if my understanding is correct then the voltage drop is not relevant in this case because power never circles back around it gets sent out into the environment to the ground. Is that not the...

Thank you so much for this depth of knowledge you are providing. To begin with I had calculated by simple law of Ohms. The potential of the circuit I had calculated to 5V and my volt meter agrees with you that the true potential is a bit less than that. In any event 5V & 220ohms = .022~A or...

Out of pin 13 when my program instructs the controller to do so the output is 5V of force with 40ma of current that then hits a resistor and after the resistor there should be less current and also less voltage I think but I do not know how much yet which leads me to ask the question. The...

http://arduino.cc/en/Main/ArduinoBoardUno This is the actual specification of my board. It says: DC Current per I/O Pin 40 mA I have measured the voltage to 5V with a volt meter coming out of the pin 13. I can't seem to get an accurate OHMs reading from my home depot IDEAL volt meter...

I have an Arduino Uno micro controller that operates at 5V and I'm doing some work with an LED. The positive leg of the LED has a 220ohm (1/4watt) resistor on it and goes into output pin 13 which produces 40ma @ 5V. My LED wants to have 2V @ 18ma. I'm not quite sure yet how to calculate the...