A voltage generator

potential difference

The voltage generator is a device that can create a potential difference between the positive pole and the negative pole.

Generated voltage can be of two types that you can see the symbols below:

Alternate Current

simbolo corrente alternata

Continuous Current

simbolo corrente continua

Continuous current is for example that generated by a battery so that you can locate the "positive" pole, that is the one with the greatest potential.

The alternating current (that of our homes at 220-230 volt) instead inverses its polarity continuously, it does not make sense to mark the positive pole.

Electrician

Electrical circuit

Electrician

Neutral cable and phase cable

Electrician

Voltage and electric current

Electrician

Alternating voltage

Electrician

Electrician equipment

Electrician

The phase and the electrical power

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