I'll just submit this for consideration: http://www.bigclive.com/tickle.htm > On 28 Mar 2015, at 15:49, RussellMc wrote: >=20 >> On 29 March 2015 at 02:57, Rossano Gobbi wrote: >>=20 >> The most useful experience we made at school was with a power supply >> designed to try&feel the current flow across your body. I don't know if >> that's common in electronic schools but it should. >> You get one terminal in your hand and the other near the elbow, you/the >> teacher can vary the current with a knob. Then you feel the current flow= ing >> - muscles blocking... impressive. >>=20 >> Apart from that I've just only experience with a few 230VAC shock. The o= ne >> I remember very well is when I accidentally touched a connector at our h= ome >> mains entrance. Probably being before the RCD made it more effective tha= n >> usual... > Memories surface. > Telephone hand ranked alternator. > Pot of salted water. > Coins at bottom. > Hold one wire and try to retrieve coins. > A "friend" cranks the alternator. > I think the coins were probably quite safe. >=20 > _________ >=20 > An RCD bites quite nicely as it trips. > By the time they became common I'd got past receiving mains shocks except > on pecial occasions and leap years, if then. > Si I tried an RCD protected circuit shok across the back of a hand. A saf= er > place than many - just not safe. The RCD tripped but the shock was still > significant. >=20 > ___________ >=20 > Warning - THE FOLLOWING IS "NOT SAFE" FOR THE SQUEAMISH. > (I'm not too happy with such things even though a meat eater). >=20 > I have a friend who at one stage (officially) tested electric fence safet= y > on anaesthetised sheep. > (He said that getting ethics approval for such things takes some effort > even though the end result is greater sheep safety.) > His task was to make a shock system that synchronised fence discharge wit= h > the t phase of the sheep QRST cycle - the most sensitive point shock wise= .. > At full power the shock never managed to kill the sheep due to heart > effects **BUT** he says the breathing cycle was affected and the sheep di= ed > of asphyxiation. >=20 >=20 >=20 > R > --=20 > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .