Voltage Resistor Calculator

So you need to enter a value of r2 in the lm317 voltage calculator to calculate the output voltage.

Voltage resistor calculator. Enter the total voltage supply resistance of first load second load and third load and click calculate. A voltage divider calculator calculates the voltage drops on each resistor load when connected in series. The recommended value for r1 is 240ω but it can also be some other value between 100ω to 1000ω. This is in volts needed voltage the voltage that is needed which is lower then what you have.

Calculates the voltage drops on each resistor load when connected in series. Calculate the current in the circuit which is the same across each resistor since there is only one wire in the circuit. Enter the following values to calculate the dropping resistor start voltage the starting voltage of the circuit. Enter total voltage supply and press the calculate button.

Calculate the total resistance by adding the individual r values. Voltage divider calculator 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. Then divide the voltage across the circuit by the total resistance to find the current. The formula for calculating the output voltage is based on ohms law and is shown below.

The output voltage v out is dependent on external resistor values r 1 and r 2 according to the following equation. You will get the results of voltage drops in volts. Calculate the voltage drop across each resistor using ohm s law. Voltage drop across a resistor calculator.