RE: That's the, aptly named, death cap. Nt

Posted by jea48 (A) on October 30, 2016 at 11:26:39

In Reply to: RE: That's the, aptly named, death cap. Nt posted by John Elison on October 30, 2016 at 10:41:54:

Okay! However, the human body has resistance so I was modeling the human body as a dead short with zero resistance for maximum current from 120-volt source. If your body has 50k-ohms resistance, the current through your body would be 1.65-mA with a voltage drop of 82.3-volts. If your body has 500k-ohms resistance, the current would 0.239-mA with a voltage drop of 28.6-volts.

Quote:

The NIOSH states "Under dry conditions, the resistance offered by the human body may be as high as 100,000 Ohms. Wet or broken skin may drop the body's resistance to 1,000 Ohms," adding that "high-voltage electrical energy quickly breaks down human skin, reducing the human body's resistance to 500 Ohms."

https://en.wikipedia.org/wiki/Electric_shock

Well, I don't have one of those old capacitors and I can't imagine why anyone would use one in that application. However, I just tried touching a modern 0.05-uF capacitor connected to my line voltage and I definitely could feel the shock. I used two fingers on one hand rather than both hands because I didn't want the current going through my heart. My finger tips tingled. It felt kind of like touching a little 9-volt battery to my tongue. Have you ever tried that. I didn't want to hold on to it very long, but it didn't hurt me.

John,
The old paper condenser was the capacitor that was used in the old guitar amps from the 1940s, 1950s, and probably the early 1960s. Not sure about the 1960s though.

However, I just tried touching a modern 0.05-uF capacitor connected to my line voltage and I definitely could feel the shock.
I used two fingers on one hand rather than both hands because I didn't want the current going through my heart.

If you are willing to try the test again, using your two fingers, first wet your fingers with your mouth and do the test again. Report back your findings.

Jim

Guitarists Who Were Electrocuted While Playing (Open in New Window)

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Follow Ups Full Thread

Topic - What's the purpose of the capacitor on the AC mains line to chassis for? - jea48 11:37:50 10/27/16 (20)

not to hurt you - djk 15:46:47 11/01/16 (2)

RE: not to hurt you - jea48 11:23:22 11/02/16 (1)

RE: not to hurt you - triamp 01:20:11 11/07/16 (0)

That's the, aptly named, death cap. Nt - viridian 20:46:17 10/28/16 (10)

RE: That's the, aptly named, death cap. Nt - JURB 11:21:45 10/29/16 (9)

RE: That's the, aptly named, death cap. Nt - jea48 21:21:35 10/29/16 (7)

RE: That's the, aptly named, death cap. Nt - John Elison 06:11:59 10/30/16 (6)

RE: That's the, aptly named, death cap. Nt - jea48 08:24:24 10/30/16 (5)

RE: That's the, aptly named, death cap. Nt - John Elison 10:41:54 10/30/16 (4)

RE: That's the, aptly named, death cap. Nt - Dave_K 05:19:03 11/01/16 (0)

RE: That's the, aptly named, death cap. Nt - jea48 11:26:39 10/30/16 (2)

RE: That's the, aptly named, death cap. Nt - John Elison 11:54:15 10/30/16 (1)

RE: That's the, aptly named, death cap. Nt - jea48 15:57:12 10/30/16 (0)

RE: That's the, aptly named, death cap. Nt - John Elison 15:27:57 10/29/16 (0)

I just rewire and remove the cap - FenderLover 22:02:55 10/27/16 (0)

The chassis won't be hot. - Ralph 13:45:04 10/27/16 (0)

Here is one shown ahead of the fuse. - jea48 11:40:57 10/27/16 (3)

"Ground Switch" - G Squared 13:55:33 10/27/16 (2)

RE: "Ground Switch" - Blackdog 20:22:57 10/27/16 (1)

RE: "Ground Switch" - jea48 08:19:40 10/28/16 (0)

Follow Ups

RE: That's the, aptly named, death cap. Nt - jea48 11:26:39 10/30/16 (2)

RE: That's the, aptly named, death cap. Nt - John Elison 11:54:15 10/30/16 (1)

RE: That's the, aptly named, death cap. Nt - jea48 15:57:12 10/30/16 (0)

RE: That's the, aptly named, death cap. Nt

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