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Bipolar power supplies are capable of continuously outputting both positive and negative polarities.
Generally, bipolar power supplies can operate in the four quadrants of source and sink operations with both positive and negative polarities.

four quadrants

The four quadrants visualize the directions of the voltages and current, and they represent the following four states.
The first quadrant has a positive voltage and current state, and indicates the operation as a positive power source.
The second quadrant has a positive voltage and negative current state, and corresponds to the operation as a positive electronic load.
The third quadrant has a negative voltage and negative current state, and indicates the operation as a negative power supply.
The fourth quadrant has a negative voltage and positive current state, indicating the operation as an electronic load at the negative pole.

A bipolar amplifier is a type of bipolar power supply that does not have an integrated signal source; instead, it amplifies and outputs signals from an external source. Bipolar amplifiers can operate at high speeds and are used to evaluate electronic components and devices. They are also used in applications such as test equipment, manufacturing equipment, and analytical equipment.

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