 # How Do I Reduce 12v To 5v?

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

PROCEDURE:Let’s have a look at the pin configuration of 7805 IC.Connect the 7805 IC in the Veroboard.Now connect 470uf and one 0.1uf capacitor parallelly with pin 1,2.Now similarly connect 220uf, 0.1uf capacitor parallay with pin 2,3 as connected in the diagram below..

## How do I reduce 5v to 3.3 V?

The simplest possible step-down circuit is a resistive divider. Drive your 5V output into a chain of resistors, from which you tap your 3.3V logic input. A chain consisting of a 2.2k and a 3.3k resistor should produce a 3V output from an applied 5V input.

## Will 5v trigger a 12v relay?

Usually it’s a 5V circuit to switch a 12V relay. That’s easily done by ground switching (assuming their 0V aka grounds are common). [ FYI: That’s the common technique used for many modules and circuits – ie an input out output low or ground is the “active” state.

## What is the difference between 5v and 12v?

While the 5v will use less power, but will be limmited to shorter distances. The voltage doesn’t imply power. 1 amp of current at 12v uses 12 watts of power, yet 3 amps at 5v uses 15 watts of power. Watts is what power is measured in and what you’re billed for.

## How do you reduce a 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.

## What resistor do I need to drop 12v to 5v?

Level ShiftersResistor CombinationUse4.7 kΩ and 6.8 kΩ12V to 5V4.7 kΩ and 3.9 kΩ9V to 5V3.6 kΩ and 9.1 kΩ12V to 3.3V3.3 kΩ and 5.7 kΩ9V to 3.3V

## Can I use a 5v adapter to power a 4.5 V device?

Depends on the voltage tolerance of the device. Likely it will work fine, if you’re willing to risk it. When a device says a certain voltage, it doesn’t need 4.5000000000V exactly. Typically if a device is designed to run on batteries, I.e. 4.5V = 3×1.

## How do you reduce 12 volts?

It’s possible to step 12 volts down to 6 volts by incorporating a pair of 10,000-ohm resistors into the circuit. Cut two lengths of wire, and strip each wire of 1/2 inch of insulation at each end. Attach one end of the first wire to the positive terminal on the power supply.

## Can I use 12v for 5v?

The device will very likely burn out. In addition, depending on what the device is and the capacity of the 12V supply, connecting a 12V supply to a device rated 5V max could lead to a hazard – fire, explosion, etc. Mostly it will get damaged.

## How do I reduce 5v to 3.7 V?

To convert 5 v to 3.7 v at fixed load ,we just have to add a fixed series resistor. 5 to 3.7 that means our series resistor have to create 1.3 v drop across it. For load 0.5A , R= 2.6Ohms and power rating is 0.65W. Idea of using zener diode is good with small series resistor.

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

In the circuit, we use LM317 DC voltage Regulator. To reduce the 5V input voltage from USB Port to the 1.5V at 1.5A maximum output.

## How do I reduce 5v to 4v?

From 5v to 4v (ish) all you need is a simple and cheap silicon diode. You will drop about 0.7v over a diode which is probably near enough? Just make sure the diode is rated for the power you need.

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

An open-collector output and a pull-up resistor should convert 5V signal to 12V. You can use an NPN transistor (and base resistor) to change your output to an open-collector output.

## How do I reduce 9v to 5v?

LM7805 9v to 5v converter: A 9v to 5v voltage regulator can be implemented with an LM7805 step-down voltage converter. It is used for (10mA to 1 Amp and more) medium to the high current application. The unique about this circuit is its ability to provide the same output current as applied at the input end.

## Can I use 19v charger for 12v?

No, don’t use it! The PSU will supply 19V (“voltage source”) and will probably damage the load. There are PSUs that limit output current by dropping/regulating the output voltage (which then can be considered a “current source”), but as long as the required current isn’t constant that wouldn’t work either.