# Can I Use A 12V Adapter For 10V?

## Can I use a power adapter with higher voltage?

Higher current (A) is okay because the device won’t use as much, but higher voltage (V) is going to “fry” it.

Conversely, lower voltage is unlikely to cause damage since the device simply won’t have enough power, but lower current can cause trouble because the power supply cannot provide enough..

## Will a 19V TV work on 12V?

will 19v tv work on 12v? nope, it won’t work.

## Can I use 20v adapter on 19V laptop?

20v can be used for 19v as long as the current rating of 20v is the same or higher but only temporarily. Best to charge the battery and the then unplug and run the laptop, notebook etc on their batteries themselves to ensure the correct input to the circuitory. Runng 20v for 19v directly is not advisable.

## Can I use a 19V charger on a 15V laptop?

If you have a 15V LCO (LiCoO2) battery, then its voltage upper limit is 17V. So, 19V would be too high to charge this 15V pack. Either use the device manufacturer’s charger or use a DC-DC step-down converter to reduce the 19V down to 15V or 17V (if it’s LCO).

## How can I reduce my voltage adapter?

How to Reduce Voltage in Half. 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.

## Can I use a 5V adapter to power a 9V device?

No! It might work for few minutes, but eventually the voltage drop on the internal regulator will cause the circuit to overheat and burn. It could be however, that your adapter has an internal resistance causing the voltage to drop to ~5V, so it could work in this case, if the adapter can supply the needed current…

## Can you use a 15v adapter for a 12V device?

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.

## Can I use a 5V adapter to power a 4.5 V 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. … 5V batteries, it will for sure have a wider voltage tolerance as battery voltage sags at the low end, andits probably a safer bet there’s some upper tolerance in there as well.

## What happens if I use a 12V adapter on a 5V device?

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.

## Can I charge a 19V laptop with a 12V charger?

NO you cannot charge your 12V AGM battery directly with a 19V Laptop power supply. … So your fully charged state is about 13.8 – 14.5V. Putting two batteries in parallel does not change the voltage required to charge them it simply increases the current capability (increased Ah rating).

## Can I use a 9V adapter for 7.5 V?

Equipment designed for a 7.5V input is often intended for use with a 9V battery, which may drop in use to even lower than 7.5V. The components are likely to be rated for >10V.

## Can I use 12V Adaptor 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.

## Can I use a 10v adapter for a 9V device?

You only need to have at least enough to give the system what it wants for amps. But other wise, 9V 1A, or 9V 10A – both will work just the same. … 10v pushes more power into your system. Voltage commonly equates to pressure, if you put too much pressure it could cause a blow out.

## What happens if I use the wrong voltage adapter?

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.

## Can I use a 5V adapter for 3V?

There is not such thing (or there should be no such thing) as a 3V USB anything… USB is 5V, and always will be. It is a standard that all devices must comply with. This means that you should not be able to find an AC adaptor to 3V with USB, If you do find it, don’t buy it.

## Can you use a 19V adapter on a 14V device?

It might tolerate the excess voltage, or it might now. It just depends on the design of the power circuitry in the device. … I am sure the 19V is also reduced to other lower voltages thru voltage regulators, but probably higher than 14V. So for the device to function probably it will not work well on only 14V.

## Will too much amperage hurt a device?

A higher voltage than a device is designed for will most likely blow up some components, but amperage is derived from how much current is actually drawn, based on the device’s resistance, so having “too much” is not a problem and will do no harm.

## How do I convert 9V to 5V?

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 you use a 14V adapter for a 12V device?

In simple terms, using a 14V adapter will result in higher current through the components, which will shorten their life span or fry them. Most ’12v’ supplies really measure in around 13.6 or so. I think you are fine.

## How do I reduce 12V to 15V?

To drop from 15v to 12V at 5amps , that is drop 3volts at 5amps requires a 0.6R resistor, rated at LEAST 15Watts. To be sure it didnt get overheated I would use a 25Watt or higher resistor. Eric ” Good enough is Perfect “, good enough means it meets the Clients specification.!

## Can I use a 5V 2a charger with a 5V 1a device?

5 Answers. Yes, it is absolutely safe to charge a device with a charger that has more current capacity than needed. Since the voltage is held constant (5V), the only factor that determines current draw is the load (another term for resistance) the device places on the charger.