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This common supply could be across a dual supply, such as 5V or 12V, or it could be a single supply that is positive or negative, such as +5V, +12V, -5V or -12V, etc. with respect to a common point or ground, typically 0V.
In order to provide various voltage levels from a single supply voltage, voltage dividers are helpful. This common supply could be across a dual supply, such as 5V or 12V, or it could be a single supply that is positive or negative, such as +5V, +12V, -5V or -12V, etc. with respect to a common point or ground, typically 0V. Because the "Volt," the voltage unit, measures the magnitude of the potential difference between two places, voltage dividers are sometimes referred to as potential dividers. A voltage or potential divider is a straightforward passive circuit that makes use of the voltage drop that occurs when components are linked in series.
The simplest straightforward example of a voltage divider is a potentiometer, which is a variable resistor with a sliding contact. We can apply a voltage across its terminals and generate an output voltage proportional to the mechanical position of its sliding contact. However, since they are two-terminal devices that can be connected in series, individual resistors, capacitors, and inductors can also be used to create voltage dividers.
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