# Question: How Do You Convert 12V To 9V?

## How do you reduce voltage from 24v to 12V?

Simple voltage dropping isn’t efficient, and efficient voltage dropping isn’t simple.

The proper solution is a 24 to 12 V switching regulator, at the end of the wire, as you have surmised.

You could wire up a relay on a timer to swap between the batteries every five minutes or so.More items….

## How do you convert 12V DC to 4V DC?

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.

## Can I use 12V for 9V?

In most cases, you cannot use a 12V adapter to power a 9V guitar pedal. Using a 12V adapter on a pedal designed to only handle 9V can completely destroy it. There are some guitar pedals built to handle voltages higher than 9V. Those pedals will work perfectly fine with a 12V adapter.

## How do you reduce voltage from 12V to 6v?

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 15V for 12V?

Can I use a 15v plug to a 12v device receptor? In the case of cooling fans the answer is generally yes. Most cooling fans accept a variable DC voltage of between 6V to 23V. Anything else I would say “No.” Wall bricks are cheap at around \$6 for a cheapo from Fry’s, and will step down 110V AC to 12V DC in a snap.

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

This is a USB 5V to 1.5V/3V Step-Down Converter Circuit. It is used instead of a normal AA battery. 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.

## Can 12V AC kill you?

12V*500mA can produce 6w of power enough to kill if it passed trhough your heart, but your body has enough resistance to avoid that happens with little volt. … The 500 ma is way more than enough to kill you but 12 volts will not push very much current through your body, not even enough to feel it! So the answer is no.

## How do you make a 12V AC to 12V DC?

Step 1: Choose the Transformer. In this project we choose a 12VAC 20VA transformer with screws at the bottom. … Step 2: Build the Bridge Rectifier With One Capacitor in Parallel With It. … Step 3: Add the Voltage Regulator to Give 5v DC Output. … Step 4: Future Improvement. … 2 Comments.

## How many LEDs can a 12V battery power?

So, a 12V battery wired to four 3V LEDs in series would distribute 3V to each of the LEDs. But that same 12V battery wired to four 3V LEDs in parallel would deliver the full 12V to each LED – enough to burn out the LEDs for sure! Wiring LEDs in parallel allows many LEDs to share just one low voltage power supply.

## Can I use a 24V power supply on a 12V?

The 24V supply can be used but you need to add a series resister to drop the voltage by 12v.

## Is it OK to use a power supply with higher voltage?

Voltage too high – If the adapter has a higher voltage, but the current is the same, then the device will likely shut itself off when it detects an overvoltage. … The device could power on and just draw more current from the adapter than it’s designed for. This could cause the adapter to overheat or fail.

## How do I 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.

## Can I use 12V AC instead of 12V DC?

As long as the voltage of the “DC Appliance” is not less than the 12 Volt adapter then it will either work or won’t, all in all it’s a bad idea to experiment, actually it’s a bad idea just to even think about doing it, unless you know about what you are about to do, don’t.

## How do I convert 12V to 6V?

Limiting current resistor.Load using unstable and low currents.12V to 6V step down circuit using 7806.Step down voltage to 6V using 7805.Use 7805 to set fixed 6V output with pontentiomer.12V to 6V DC converter using LM317.6V DC converter circuit at 3A using LM350.6V 2A to 5A output converter using 7806 – transistor.More items…•Jan 18, 2021

## 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

## How can I reduce 12V to 5V?

12v to 5v converter using a voltage divider: One 12v battery, 1.8k resistor, 1.3k resistor, connecting wires. This circuit is a voltage divider schematic. You can design it for the required ‘output voltage’ by using this formula: Here, Vout is the output voltage taken across resistor R2.

## 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 reduce voltage?

A resistor has the ability to reduce voltage and current when used in a circuit. The main function of a resistor is to limit current flow. Ohm’s law tells us that an increase in a resistors value will see a decrease in current. To reduce voltage, resistors are set up in a configuration known as ‘voltage divider’.

## What is the difference between 12V AC and 12V DC?

12V DC is safer than 12V AC. Body resistance decreased when the 12V AC still may cause the dead, 12V DC will not be in 100%. However, the hazard degree of electric shock to the human body mainly depends on the size of the current passing through the human body and the length of the energization time.

## Do 12V LEDs need resistors?

Most LEDs require a current limiting resistor if they are driven above their typical forward voltage (usually around 1.8 to 2.4V depending on the LED materials that are defined by the LED’s colour). … If an l.e.d. is to be used with a 12V supply it has to have a current limiting resistor in series with it.

## Will a 14v TV work on 12V?

Most 14v models will run fine on 12v.