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What is the difference between Vcc- and ground? Answered

What is the difference between Vcc- and the ground symbol on this schematic? Or are they the same thing? I've just never encountered this before.



5 years ago

Thanks you all for those info.

Ground is relative. Imagine connecting two 9v batteries 'in' series and you make the joining point the ground. One pole of the battery will be +9v n the other will be -9v with reference to the ground

Another way to think of it: Ground is the reference point relative to which other voltages in the circuit are measured. Vcc- is negative relative to ground, Vcc+ is positive relative to ground. We usually call the ground "zero volts", to make the other measurements simpler.

That's an amplifier which has positive and negative voltage rails, for example +12V and -12V, with reference to Gnd (0V).  The PSU to provide this is called a split-rail supply, which has a positive and a negative voltage regulator.

+1. Ground doesn't necessarily mean negative, just 'zero', capable of sourcing or sinking current.