Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Safety Example Using Low
Document related concepts
Stepper motor wikipedia , lookup
Pulse-width modulation wikipedia , lookup
Variable-frequency drive wikipedia , lookup
Power inverter wikipedia , lookup
Ground loop (electricity) wikipedia , lookup
Immunity-aware programming wikipedia , lookup
Electrical ballast wikipedia , lookup
Ground (electricity) wikipedia , lookup
Distribution management system wikipedia , lookup
History of electric power transmission wikipedia , lookup
Electromagnetic compatibility wikipedia , lookup
Electrical substation wikipedia , lookup
Three-phase electric power wikipedia , lookup
Schmitt trigger wikipedia , lookup
Power electronics wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Overhead power line wikipedia , lookup
Current source wikipedia , lookup
Buck converter wikipedia , lookup
Voltage regulator wikipedia , lookup
Opto-isolator wikipedia , lookup
Switched-mode power supply wikipedia , lookup
Surge protector wikipedia , lookup
Voltage optimisation wikipedia , lookup
Alternating current wikipedia , lookup
Transcript
Example Using Low Voltage DC A person accidentally grabs conductors connected to each end of a dc voltage source, one in each hand. a) What is the minimum source voltage that can produce electrical shock sufficient to cause paralysis, preventing the person from letting go of the conductors? RA 400 RT 50 RL 200 I min 50mA Vmin I min ( RA RA ) Vmin (50 103 A)(800) Vmin 40V b) Is there a significant risk of this type of accident occurring while servicing a personal computer which typically has 5V and 12V sources? No. Considering 12V as the worst case, 12V I 15mA 800 The 15 mA current would cause a mild shock.
