# current electricity

How much voltage/current is "dangerous"? - Electrical Engineering… » Sep 5, 2011… In general, for limb-contact electrical shocks, accepted rules of thumb are: 1-5 mA is the level of perception; 10 mA is the level where pain is … Electronics.stackexchange.com

A novel mechanism for electrical currents inducing ventricular fibrillation: The three-fold way to fibrillation - PubMed » It has been long recognized that there are 2 methods for inducing VF (ventricular fibrillation) with electrical currents‥ These are: (1) delivering a high-charge shock into the cardiac T-wave, and (2) delivering lower level currents for 1-5 seconds. Present electrical safety standards are based on t … Pubmed.ncbi.nlm.nih.gov

Which direction electricity follows in a breadboard? » Hi all I'm a complete beginner who is waiting his first arduino kit to arrive via mail. Meanwhile, I have started learning and experimenting with how circuits work. I 've no prior experience in electronics whatsoever, so please excuse my probably stupid question and potentially wrong terminology. So, here is what I am struggling to understand: I am a bit confused on which direction the electricity flows in a circuit which is powered by a 9V battery. I have created a simulated circuit on a bre… Forum.arduino.cc

Current-limiting for LED when Vf = Vdd - Electrical Engineering… » Jul 18, 2018… 2 Answers 2… The nominal Vf for an led in a datasheet is given for a nominal If. If your If is less than the If at the nominal Vf, then it won' … Electronics.stackexchange.com

Electrical Injuries » Electrical injuries, a relatively common form of mechanical trauma, can occur as a result of lightning, low-voltage, or high-voltage injury, and are often associated with high morbidity and mortality. Almost all electrical injuries are accidental and often, preventable. If not instantly fatal, the damage associated with electrical injuries can result in the dysfunction of multiple tissues or organs.[1][2][3][4] Ncbi.nlm.nih.gov

Voltage and max current of digital output? » i didn't see the specifics and Google search isn't helpful. I probably didn't use the right keyword. So what are the typical voltage level and max current of the digital output? I wanted to get optimal resistor value to drive LEDs using this old formula: Vsource-2.2/.02 (voltage source minus 2.2v for LED, divided by 0.02A) Blue, purple, and white LED typically requires 3v. TIA Forum.arduino.cc

Could someone please explain Vf, Vin and Vout? » I've just built my first P7 maglite (with buckloads of help from Stefan!)! Anyway, that asides, could someone please explain what Vf, Vin, and Vout mean, what values would be good and bad, and how to measure them. I have very little knowledge of electronics - just looking to understand more… Candlepowerforums.com

understanding an LED's Vf » This thread is basically a continuation of a previous discussion about a simple LED project that I am working on with my 5th grade son as part of his science project. I figured that I would start a new thread because we changed around our test equipment today and a clean new slate is always nice… Forum.allaboutcircuits.com