Why is that we need to use different electrical/electronic symbols in making a schematic diagram?
An electrical schematic diagram, or circuit diagram, is a drawing that shows the connections and components in an electrical circuit. It makes it easier to understand how to build a particular circuit. We use symbols for the components in circuit diagrams, because it’s quicker and requires less artistic skill.
How are power and ground symbols used in a schematic?
Power and ground symbols are used in the Schematic to indicate a connection to a power source. These symbols are required for aesthetic purposes and are not translated to the PCB (because they do not have PCB footprints associated with them). The signals they represent are connected together at the translate stage by ‘implied’ connectivity.
Where do the ground symbols go in a circuit?
In this case, it is a matter of context. The symbols are denoting separate grounds, and that’s where their meaning ends. It is very unlikely the power ground is tied to the chasis, and the digital ground is tied to earth. More likely, both grounds would go back to the negative terminal of the battery.
How does grounding work in an electronic circuit?
First of all: grounding in electronics is different from the earth connection in wall outlets (although they sometimes are connected). «The ground symbol keeps appearing at different points in a circuit and I could not understand why a particular place was chosen for grounding.
How is the ground terminal connected to the chassis?
As mentioned previously, the ground terminal (earth ground) is physically tied to the chassis, which in turn is connected to the ground wire within the power cord, which is finally connected to the earth via the three prong outlet. A fairly common mistake made by beginners is to connect a load between the positive (+) and the GND terminals.