Voltage Divider
Written by willy mcallister.
Voltage divider. Voltage dividing components. It s output voltage is a fixed fraction of its input voltage. A voltage divider circuit is a very common circuit that takes a higher voltage and converts it to a lower one by using a pair of resistors. A voltage divider referenced to ground is created by connecting two electrical impedances in series as shown in figure 1.
This circuit is very useful for all analog circuits where variable voltages are required hence it is important to understand how this circuit works and how to calculate the values of resistors. Voltage dividers are one of the most fundamental circuits in electronics. The input voltage is applied across the series impedances z 1 and z 2 and the output is the voltage across z 2 z 1 and z 2 may be composed of any combination of elements such as resistors inductors and capacitors. Let s consider the figure below displaying two series resistors connected to a voltage source.
A potential divider circuit is a very common circuit used in electronics where an input voltage has to be converted to another voltage less than it. Using just two series resistors and an input voltage we can create an output voltage that is a fraction of the input. Whereas series circuits. Parallel circuits are also known as current divider circuits because in these circuits the current is divided through each resistor.
If the current in the output wire is zero. The formula for calculating the output voltage is based on ohms law and is shown below. As you know there are two types of combinations in a circuit they are series and parallel connections. Perhaps the most common voltage divider circuit is the one involving a potentiometer which is a variable resistor.
The voltage divider rule states that the voltage divided across a resistor is directly proportional to the magnitude of the resistor. The best example of a voltage divider is two resistors connected in series with the input voltage applied across the resistor pair and the output voltage taken from a point between them. Since voltage dividers are fairly common they can be found in a number of applications. It distributes the input voltage among the components of the circuit.
This is known as the voltage divider formula and it is a short cut method for determining voltage drop in a series circuit without going through the current calculations of ohm s law. A voltage divider is a simple series resistor circuit. The higher the resistance is the higher will be voltage drop and vice versa. Below are just some of the places where this circuit is found.
A voltage divider is a simple circuit that can reduce voltage. A voltage divider is a simple circuit which turns a large voltage into a smaller one. Using this formula we can re analyze the example circuit s voltage drops in fewer steps.