Switching power supply gnd is doing
Related to some:
VDD: supply voltage (unipolar device); supply voltage (4000 series digital circuit); drain voltage (FET)
VCC: supply voltage (bipolar device); supply voltage (74 series digital circuit);
VSS: Ground or power supply negative
VEE: Negative voltage supply; source of the FET (S)
VPP: Program / erase voltage.
GND is divided into digital ground (SGND) analog ground (AGND)
? The answer is recommended by the users
Is a place for the application of the assumption that for the power supply, it is a negative power supply. It is different from the earth. Sometimes need to connect it with the earth, and sometimes do not need, depending on the circumstances
Circuit diagram and the circuit board on the GND (Ground) on behalf of the ground or line 0. GND is the meaning of the common, it can be said to be, but this is not a true sense of the ground.
