Interesting reminder about capacitor safety

Thread Starter

Futurist

Joined Apr 8, 2025
720
Hello,

So how about a brief summary.

I really don't like seeing videos posted with no idea what they are trying to tell us. That's what advertisements do just to get you to click on them.
He explains how a Leyden jar, despite its tiny capacitance can be lethal due to its ability to handle many kilovolts. Its aimed at students. He runs a non profit science education institute, he impressed me as being a first rate teacher.
 

MrAl

Joined Jun 17, 2014
13,667
He explains how a Leyden jar, despite its tiny capacitance can be lethal due to its ability to handle many kilovolts. Its aimed at students. He runs a non profit science education institute, he impressed me as being a first rate teacher.
In one electronics class I was in we used to charge up capacitors and then go and shock someone else in the class. Everyone got a kick out of that but it could have been dangerous. They then learned pretty well that capacitors can hold a charge for a decent amount of time.

That, and hang resistors out of the window on long leads connected to a variac set at full voltage with the switch off. Once the resistor was down enough to be just outside the class below us, we turn the switch on. The resistor blows out like a fire cracker. The class downstairs got a big kick out of that (ha ha).
 
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