Voltage divider calculator

1. How do you calculate voltage divider?
2. How do you find R1 and R2 in voltage divider?
3. What voltage division ratio would be required to reduce the voltage from 5V to 3.3 V?
4. How do you reduce a 12V to 5V with a resistor?

How do you calculate voltage divider?

Voltage Divider Formula / Equation

Equation to find the output voltage of a Divider Circuit: R2 / R1 + R2 = Ratio determines scale factor of scaled down voltage.

How do you find R1 and R2 in 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) .

What voltage division ratio would be required to reduce the voltage from 5V to 3.3 V?

Directly interfacing a 5V logic output to a 3.3V input may cause permanent damage to the 3.3V circuit. In this case, a voltage divider with an output ratio of 3.3/5 might be used to reduce the 5V signal to 3.3V, to allow the circuits to interoperate without damaging the 3.3V circuit.

How do you reduce a 12V to 5V with a resistor?

Two resistors in series. Example: one side of a 5 Ohm resistor connected to a 7 Ohm resistor, the other side of the 5 Ohm connected to Ground/zero, and the other side of the 7 Ohm connected to 12V. Where the two resistors are connected there will be 5V.