Effect of Constant vs Variable Current on Human Body: Comparing Voltage & Exposure Time

Hello. Which current is more dangerous for the human body, constant or variable, assuming the same voltage and time of exposure?

Hello,

they were definitely standing

greetings

Hello.
It depends on what installation.
If the transformer is earthed, it is permanent because if you touch - or +, you risk electric shock with good earthing.
If it is not earthed (secondary winding), an electric shock can occur when you touch - and +. The same goes for the transfer voltage.

the colleague above is right, but I considered it in terms of its impact on the human body

+ and - from the transformer? Some crap

http://pl.wikipedia.org/wiki/Pora%C5%BCenie_pr%C4%85dem_elektryczny

Google ....

In my opinion, the answer is more complicated and the question is too general. The flow of electricity through the body, and in fact its path, causes different reactions of individual organs. Their reaction depends not only on whether it is a direct or alternating current, but also depends on other quantities, e.g. frequency, voltage, flow time ... etc.
So there is no unequivocal answer to such a general question.

I can also add that when it comes to the 50 Hz AC current, it is dangerous because it can cause fibrillation of the heart chambers.

The steady "fry" more if I put it that way; p

If the frequency is much higher, there is an epidermal effect and it does not cause any harm to the body.

As a colleague wrote above, this is a complex problem, but you can also find a lot on the Internet and in books (they do not bite).

Gentlemen
Swap is much more dangerous! Especially 50Hz

Gentlemen, don't talk, just think. What are the values of safe voltages?
http://pl.wikipedia.org/wiki/Napi%C4%99cie_bezpieczne " target="_blank" rel="nofollow noopener ugc" class="postlink inline" title="" > http://pl.wikipedia.org/wiki/Napi%C4%99cie_bezpieczne
So, since the safe voltage value is higher for direct current, it is probably logical that alternating voltages are more dangerous.
Unless the standards were invented by idiots.

The discussion is of the type: After adding sugar, should the tea be stirred left or right ?!
Each type of electricity carries different risks!
50 Hz alternating current is fibrillation of the heart, direct current is the electrolysis of body fluids (the effects may appear after a long time).
The alternating current "rejects", the direct current causes the muscles to contract, so that you cannot, for example, open your hand clasped on the cable. Etc. etc.
The protections consist - first of all - in limiting the time of current flow through the body. And common sense.
Regards

Hello.

Direct current is more dangerous.

The alternating current is more "unpleasant" in paralysis, that is, it is stronger and more painful, and due to the fact that the functioning of the nervous system is based on electrical impulses (a change in the concentration of ions in nerve cells), it causes muscle contraction and disturbances in the functioning of the nervous system, which in turn may lead to to the aforementioned ventricular fibrillation, etc., the flow of direct current causes electrolysis of body fluids in the body and, consequently, serious disturbances in the functioning of the organism, which, as a result, lead to the end of the life of an affected individual in a short time. The values of safe voltages for direct current are higher because direct current does not cause muscle contraction like a variable one (so-called freezing) and a person can release the voltage more easily.

Regards.

HeSz wrote:

direct current is the electrolysis of body fluids

- this is how I read this statement again and ask again: does alternating current not cause blood electrolysis?

forestx wrote:

HeSz wrote:

direct current is electrolysis of body fluids

- this is how I read this statement again and ask again: does alternating current not cause blood electrolysis?

50Hz is quite a low frequency so electrolysis can also occur, but certainly to a much lesser extent than with direct current.

Regards.

Hello.
AC-induced electrolysis involves a small area of ions adjacent to the electrode. Has anyone developed a method of e.g. electroplating metal using alternating current?
Regards

Alternating and direct current are harmful in different ways, and as far as I know, the degree of harmfulness depends on the evaluation criterion:
direct current causes much more serious electrochemical effects (greater toxic effect), while alternating current
greater muscle contraction (in addition, frequencies around 50Hz are the worst in this respect) - the voltage above which
it is impossible to let go of the wire, it is smaller for alternating current, also alternating current more disturbs the heart ...

To the hardboro.
You are contradicting yourself what the forestx explained.
Since alternating current has much less safe values than direct current, how can the constant be more dangerous? 50V variable and 120V constant.
Even on vca tests this is a question and the correct answer is that AC is more dangerous.