 # Question: What Resistor Do I Need To Drop 12v To 5v?

## Can I use 12v for 5v?

Current is decided by Ohms law, I=V/R.

With 12V your device will draw double the current and gets heated up because all current limiting values of your device are calculated for 5V source.

If two power supplies have no load and full load voltage respectively 30V,25V and 30V,29V..

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

Connect 12 v to pin 1 ,pin 2 is the ground and pin3 gives 5v. Don’t want to use IC or not getting it,use a voltage divider using 2 resistors and you are done with it. Connect 12 v across the series combination of 4.7k ohm and 6.8k ohm(readily available standard ) resistor and take the output across 4.7k ohm.

## What resistor do I need to drop 24v to 5v?

You will require: Resistor (R1)190 Ohms – 2W or greater and (R2)50 Ohms (0.6W or greater). If you do not have the exact values stated then you will not get exactly 5 volts. Make sure that your load (what you want to use the 5v for) is a lot higher then 50 Ohms.

## What resistor do I need for 12v LED?

For a typical white LED that requires 10mA, powered by 12V the values are: (12-3.4)/. 010=860 ohms. To use several LEDs in parallel, sum the current values.

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

Putting four resistors in serial and connecting it with 12V power source. Taking voltage only from one resistor; thereby achieving 1/4 of power source from it. take a 12v 4ohms potentiometer where the pointer will be adjusted at 3 ohms so that the voltage at last 1 ohm will be 3v.

## How do I reduce 5v to 1.5 V?

In voltage divider circuit you want to drop 3.8V across R1 to get Vout = 1.5V. This can be done by n number of combinations of R1 & R2 values. For e.g. you can use R1=3.8K and R2=1.2K or R1=3.8Ω and R2= 1.2Ω.

## How do you convert a transistor 12v to 5v?

Steps to Connect:Connect 3.3v GPIO pin to 1k Resistor.Other end of 1k Resistor connect to 2N3904 Transistor(Base)2N3904 Transistor (Emitter) is connected to Ground.2N3904 Transistor (Collector) connect to one end of Multimeter.5v +ve supply connect to other end of Multimeter.5v -ve supply connect to ground.

## How do you make a 5v power supply with a 7805?

Output currents up to 1A can be drawn from the IC provided that there is a proper heat sink. A 9V transformer steps down the main voltage, 1A bridge rectifies it and capacitor C1 filters it and 7805 regulates it to produce a steady 5Volt DC.

## How do I reduce 12v to 5v?

Convert 12V DC to 5V DCStep 1: Take All Components As Shown Below and in Pictures. Components required – … Step 2: Connect Input Power Supply. 7805 voltage regulator contain three pins.In which we have to give power supply on pin-1 and pin-2. … Step 3: Output Power Supply. … Step 4: Wiring Is Completed. … Step 5: Checking.

## What resistor do I need to drop 24v to 12v?

If you want to connect 24V to a LED, there is no need to convert it to 12V. Just a series resistor of 500 0hms or so wll do.

## How do I convert 7805 to 12v to 5v?

Stylones 12V to 5V Converter DC-DC 1Amp Stepdown Circuit Board with 7805 Voltage Regulator IC. Delivery Associate will place the order on your doorstep and step back to maintain a 2-meter distance. No customer signatures are required at the time of delivery.

## How do you reduce voltage from 19v to 12v?

The simplest way is a 12 v battery and a resistor from its positive terminal to the 19 v positive supply. Connect the load accross the battery. And the other terminal of the 19 v to the other terminal of the battery… .

## What resistor do I need to reduce voltage?

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.

## Do resistors affect voltage?

Resistors affect both current and voltage. They do it in a linear fashion. … The voltage across each resistance will vary directly in proportion to the current that is flowing through it. So, in the first resistor of 10 ohms, the voltage across it is 10 times 10. or 100 Volts.

## Does a diode reduce voltage?

Depending on the circuit the forward voltage drop of a forward biased diode can reduce the current a similar amount as reducing the supply voltage by the forward diode drop. … Diode is not designed to limit current or voltage, but just to allow current in one direction and block it in reverse direction.