# Question: Can I Use 12v For 5v?

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

Re: 5V and 12V RGB Dumb strings As far as light output there is essentially no difference.

The big difference is the current that each of the 2 types draw.

5V strings or strips have individual leds running off 5V..

## Can I use a 12v power supply on a 10v?

No it’s not safe for the most of cases. There are two reasons. Since newer adapter has more terminal voltage therefore device is liable to draw more current and bad thing is that newer adapter is ready to provide more current. That’s why things will get worse.

## Will 5v trigger a 12v relay?

You cannot activate a 12Vdc relay with 5V. A clamp diode is recommended just to protect a transistor driver from overvoltage.

## Can I power 12v LED strip with USB?

USB ports supply 5 volts. The 12v LED strip requires at least 9 volts. I bought a step-up DC-to-DC boost transformer circuit which can step up from 1.5v and up it up 24 or 32 volts. It took 5 volts from the USB port and boosted it up to 12 volts to the LED strip.

## What resistor do I need for 5v LED?

Basics: Picking Resistors for LEDsPower Supply VoltageLED ColorResistor (rounded)5 VRed, Yellow, or Yellow-Green150 Ω5 VRed, Yellow, or Yellow-Green56 Ω9 VRed, Yellow, or Yellow-Green75 Ω9 VBlue, Green, White, or UV100 Ω4 more rows•Aug 29, 2012

## How do you convert 12v to 9v?

To reduce a 12V circuit to 9V, place two resistors in series within the circuit. Find the difference between the two voltages (12V – 9V = 3V) to determine the total amount of resistance needed.

## How does 7805 regulate voltage?

Voltage sources in a circuit may have fluctuations resulting in not providing fixed voltage outputs. A voltage regulator IC maintains the output voltage at a constant value. … The xx in 78xx indicates the output voltage it provides. 7805 IC provides +5 volts regulated power supply with provisions to add a heat sink.

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

PLace two resistors in series with the 2nd resistor value (5/7) of the first resistor value. Place the resistors between 12v and ground and then you will get 5v at the point between them. This is a very crude way of doing it. It is unregulated so the voltage out will be dependent of voltage in.

## How does a 5v relay work?

* A relay basically allows a relatively low voltage to easily control higher power circuits. A relay accomplishes this by using the 5V outputted from an Arduino pin to energize the electromagnet which in turn closes an internal, physical switch to turn on or off a higher power circuit.

## How do I convert 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.

## How much voltage is needed to change a relay?

The nominal voltage of a 12V relay is 12V, so 80% of this is 12 x 0.8 = 9.6V. So in theory, this relay should activate at 9.6V.

## What does 5v 2a mean?

DC 5V/2A, means that the input voltage, to recharge the battery is 5 volts of direct current. 2A is the amount of amperage that is suggested to recharge the battery.

## What resistor do I need to drop 9v to 5v?

Components required: One 9v battery, 100-ohm resistor (≥22 ohms), 5.1V zener diode (≥1W), some wires or connectors.

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

12V to 5V Converter | Circuit Diagram. pervious one but it is using LM7805 IC which can provide fixed 5 volt output from any 12V DC source. The circuit is ideal to use with a 12V car battery to step down the voltage to 5 volt DC. LM7805 is an IC of LM78xx series.

## Will a 12v relay work with 9v?

Description. This circuit allows a 12v relay to operate on a 6v or 9v supply. Most 12v relays need about 12v to “pull-in” but will “hold” on about 6v.

## Are 12v LEDs brighter than 5v?

5V is brighter than 12V as the 12V bullet pixels use half the current to stay somewhat close to 5V efficiency. Close, but 5V is still more efficient. So a 5V display will be brighter and use less power than a 12V display.

## 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. The circuit schematic is given below.