Understanding Galvanic Connection & Isolation in Electronics: Expert Forum Discussion

can someone explain to me what a galvanic connection is.
I also heard that there is galvanic isolation, I would also ask for an explanation of this concept.

Thank you for your help

jonbob wrote:

can someone explain to me what a galvanic connection is.
I also heard that there is galvanic isolation, I would also ask for an explanation of this concept.

Thank you for your help

Hello
A galvanic connection is a metallic connection.
Galvanic isolation occurs when the lack of a metallic connection, eg transformer, is galvanic isolation from the power grid, the "link" here is the magnetic flux.
Regards

Hello!
Galvanic isolation is isolation using a transformer. It consists in the fact that the primary side is galvanically isolated from the secondary side (they are not connected with each other). See the symbol of the transformer in the diagrams, you will understand it (there are two windings not connected to each other, and the energy is transmitted through the magnetic flux). This is used in many systems to isolate from mains voltage. There is also optical isolation - an LED diode and a phototransistor are used here.

Regards.

Added after 1 [minutes]:


Alexander_01 you were faster

and so simply, you know for sure that the metal conducts electricity and the galvanic connection is just a metallic connection, so this is the easiest way to say greetings to everyone

Well, maybe it is also worth mentioning the capacitive galvanic isolation. It is the use of a capacitor (s) as a separator. In such a system, the direct current is separated and the variable flows (often of a specific frequency (acoustic, radio, etc.). To sum up - galvanic connection (in principle) allows the flow of all currents, and those with galvanic isolation - only some (those on which We care). As a curiosity I will give such an example of a metallic connection, but it is a specifically galvanic connection. In the picture we have a power generator and a light bulb, and everything is connected with metal (e.g. copper) in accordance with the drawing. The question is whether the bulb can shine in such a system "Perhaps, provided that the frequency of the generated current is selected so that the dimensions of the transverse connections are exactly quarter-wave lengths. This is the so-called phenomenon of metal insulators.