# What resistor do I need to drop 12v to 3V led?

## What resistor do I need to drop 12v to 3V led?

Our task is to stepdown 12v into 3v. so, we are going to use 1k ohm resistor and 330-ohm resistor. Connect one end of 1K ohm resistor to 12v supply and second to any other hole of breadboard.

How do you reduce voltage from 12v to 4v?

Two ways to reduce a 12-volt system to 4 volts are to use voltage dividers or Zener diodes. Voltage dividers are made from resistors placed in series. The input voltage is divided into an output that depends on the value of the resistors used.

What resistor do I need to drop 12v to 6V?

If you have a device lacks this type of internal voltage protection, you can supply it by constructing an external resistive voltage divider circuit. It’s possible to step 12 volts down to 6 volts by incorporating a pair of 10,000-ohm resistors into the circuit.

### How do you reduce 5V DC to 3V DC?

So back to our circuit, if we have 5 volts and want 3V from it, we use the formula above. If we use a 10KΩ as our R1 resistor, plugging in the values, we get R2= (V)(R1)/(VIN – V)= (3V)(10KΩ)/(5V – 3V)= 15KΩ. So we can use a 15KΩ resistor as our R2 resistor with the R1 resistor being 10KΩ.

How do you reduce 5V to 3.3 V with a resistor?

Method #1 – Voltage Divider A voltage divider is a simple circuit which reduces a large voltage into a smaller one. Solving the formula above with Vin=5V, R1=1000ohms and Vout=3.3V. We get R2~=2000ohms.

How do you lower voltage from 5V to 3V?

To reduce voltage in half, we simply form a voltage divider circuit between 2 resistors of equal value (for example, 2 10KΩ) resistors. To divide voltage in half, all you must do is place any 2 resistors of equal value in series and then place a jumper wire in between the resistors.

#### How do you reduce voltage from 5V to 3V?

You can use a pot (potentiometer), a Zener diode, a combination of s transistor and diode, or a combination of resistors of appropriate values to reduce voltage from 5 V to 3 V.

What resistor do I need to reduce 5V to 3V?

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

To divide voltage in half, all you must do is place any 2 resistors of equal value in series and then place a jumper wire in between the resistors. At this point where the jumper wire is placed, the voltage will be one-half the value of the voltage supplying the circuit. The 5V is now 2.5V. VCC is split in half.