Understanding GND Terminal in Electronics: +12V, GND, -12V Explained for Beginners

Hello, I am a beginner in electronics very beginners, however, I will not torment all of you. I have a magazine in front of me and it shows a power supply of my own design, the terminals on it are + 12v GDN -12v I do not really know what this GDN terminal is for since it is + 12v and -12v. which clamps ?? Thank you in advance for your help .

Greetings to all ...

The GND clamp is just mass. On the other hand, +12 and -12 are tensions.
+12 and GND is 12V constant
-12 and GND is 12V DC where GND is positive potential.
Such power supplies are mainly used in power amplifiers.
However, if you do not need the even distribution of power supplies, you can use +12 and -12 then you will get 24V, where + and - are the potentials.

GND = system ground

Thank you for your help, but now how to connect the system under + 12v and -12v or under = 12v and GND ????

The abbreviation from the English GROUND- (ground, ground, ground) -a pole with a zero potential.

a very simple matter, for the first such topics, write to the beginner section https://www.elektroda.pl/rtvforum/forum27.html " target="_blank" class="postlink inline" title="" > https://www.elektroda.pl/rtvforum/forum27.html but to the point

from the ego what you write, you have a symmetrical power supply, i.e. "+", "-" and "GND", or how to explain it, you have 2 separate power supplies in which + from one and - from the other are connected and it gives GDN or mass even different zervbo because it's like it's zeroing. So if you have a system where you need to connect a symmetrical power supply, i.e. + - GND is a perfect power supply, and if you need, for example, only + and - for example, to connect the motor, you connect + to + in the power supply and - connect to GND (because there is a common + and - with what is only potrzeny minus) and it's ok, I want to use 2 motors, for example, at once - you connect the motor to the - power supply and GND is in this case + if you understand, I'm very happy greetings, here you have such a symmetrical power supply
https://www.elektroda.pl/rtvforum/topic226584.html " target="_blank" class="postlink inline" title="" > https://www.elektroda.pl/rtvforum/topic226584.html

And what exactly do you want to connect to the system?

GND is mass. Between +12 and -12 you will have 24V

Vcc - positive supply voltage, c meant that it is a supply of transistor collectors (Vcc - common collector voltage - common collector supply voltage)

Vss - negative supply voltage, the designation used in CMOS chips, meant that this power bus connected to the sources (s - source) of the transistors.

Vdd - positive voltage of field effect transistors' drains (d - drain - drain)

Vee - emitters supply voltage (negative).

Currently in general:

Vdd, Vcc - positive voltages (in the Polish version these are Udd, Ucc)

Vss, Vee - negative voltages (in the Polish version of Uss, Uee)

These voltages are measured against a common ground known as GND (GrouND).

Hello

I have a Harman Hardon 980 amplifier with a two-prong power plug. This amplifier has a screwed pin on the back of the housing separately, marked GND, so it is grounded. As I have a third, protruding pin in the wall socket, which is the ground (3-core cable in the wall, the one from the ground was yellow-green, although it does not matter), can I connect the GND pin in the amplifier to the protruding pin in the socket so that the equipment was grounded ?. A trivial question, but for some reason the manufacturer used a power cable with only two pins (and it was not possible to replace it, because it is permanent).

Photo of the amplifier (grounding is between the words Serial No. and Caution) http://www.highfidelity.pl/artykuly/0809/hk/02.jpg

I am asking because the amplifier has been humming a little for some time from the corner where there is the output to the right loudspeaker, no matter if it is on the source or not. Someone told me to unplug it from the Belkin strip because such Chinese strips do not give anything (and it is best to invest in a strip and a cable, e.g. from the Enerr company), and then I noticed that the power cable from the amplifier has only two pins.

Ian666 - The GND terminal is for additional connection to turntable ground.
If you can hear a hum from your equipment, you can probably hear a transformer and it may be perfectly normal and you weren't paying attention before.