Table of Contents
What is the voltage divider formula?
Voltage Divider Formula / Equation R2 / R1 + R2 = Ratio determines scale factor of scaled down voltage. For example, Vin = 100, R1= 20, R2= 10.
How do you calculate R2 voltage divider?
The voltage divider Resistor calculator calculates the value of the resistor, R2, of the voltage divider network based on the value of resistor, R1, the input voltage, VIN, and the output voltage, VOUT. This resistor value of R2, is calculated by the formula, R2= (VOUT * R1)/(VIN – VOUT) .
How do you reduce 12 volts to 9 volts?
To reduce a 12V circuit to 9V, place two resistors in series within the circuit. Find the difference between the two voltages (12V – 9V = 3V) to determine the total amount of resistance needed.
What is Vout in a circuit?
A voltage divider is a simple circuit consisting of two resistors that has the useful property of changing a higher voltage (Vin) into a lower one (Vout). It does this by dividing the input voltage by a ratio determined by the values of two resistors (R1 and R2):
How is Vout and Vin calculated?
Substituting Ohm’s Law for Vin yields Vin = IR1 + IR2 = I*(R1 + R2). Therefore I = Vin/(R1 + R2). Combining Ohm’s Law with the equation for I above gives Vout =V2 = IR2 = (Vin/(R1 + R2))_R2. Therefore Vout = R2_Vin/(R1 + R2).
What is a voltage Vout?
We’ll call the resistor closest to the input voltage (Vin) R1, and the resistor closest to ground R2. The voltage drop across R2 is called Vout, that’s the divided voltage our circuit exists to make. That’s all there is to the circuit! Vout is our divided voltage.
What does VIN and VOUT mean?
How do you calculate the VOUT of an op amp?
Vout = Vin+ – IR2 = 0 – (Vin/R1)R2. Therefore Vout = -Vin(R2/R1). Note: The negative sine is because the current flows from the input to the output where as in the earlier examples the current flows from the output to the input.
What does Vout mean in a circuit?
voltage divider
A voltage divider is a simple circuit consisting of two resistors that has the useful property of changing a higher voltage (Vin) into a lower one (Vout). It does this by dividing the input voltage by a ratio determined by the values of two resistors (R1 and R2):
Why are voltage dividers bad?
A voltage divider is particularly bad at providing a fixed voltage to a variable or low-impedance load. Variable loads are quite common, and include most digital circuits on the planet. Fixed, high-impedance loads can have a voltage divider in front of them.
What does Vout Vin mean?
What is the purpose of a divider circuit?
The primary purpose of this circuit is to scale down the input voltage to a lower value based on the ratio of the two resistors. This calculator helps determine the output voltage of the divider circuit given the input (or source) voltage and the resistor values.
What is a two resistor voltage divider?
The two resistor voltage divider is one of the most common and useful circuits used by engineers. The primary purpose of this circuit is to scale down the input voltage to a lower value based on the ratio of the two resistors.
What is the formula for voltage divider?
This voltage divider calculator employs the following formulas: Where, Vout = output voltage (volts), Vin = input voltage (volts), R1 and R2 = resistor values (ohms). You may also be interested in our Resistor Color Code Calculator or Transformer Calculator
What is the scale factor of a voltage divider?
V out V o u t = Output voltage. This is the scaled down voltage. V in V i n = Input voltage. R1 R 1 and R2 R 2 = Resistor values. The ratio R2 R1 + R2 R 2 R 1 + R 2 determines the scale factor. Since voltage dividers are fairly common, they can be found in a number of applications. Below are just some of the places where this circuit is found.