Can a 12V power adapter be used for a 9V device
You shouldn't. Many electrical gadgets have extremely delicate constructions that cannot withstand even a very little voltage that is higher than what is recommended. Such as most of the time, a 9V guitar pedal cannot be powered by a 12V adaptor.
Can I use a 7.5 volt adapter on a 9-volt device
You should never use a significantly higher voltage rating adaptor on any kind of electrical device. If you do so you are risking damaging the equipment and anything else that you might have plugged into it.
Can I use a 10V adapter for a 9V device
The voltage should be close (10V is probably pushing it but most likely ok as most electronics have built-in voltage regulators). The current rating is a minimum, so if a device wants 300ma, you can safely use a higher rated power supply, but not a lower rated one.
Can I use 12V adapter for 9V router
You cannot use that adapter because it is outputting more voltage than the original (12v vs. 9v). This has a likely chance of burning out one or more of the components within the router.
Can I use 12V adapter for 9.5 V
Is it safe to use an adapter that has higher voltage than what is required by the device being powered by it No. Using an adaptor with a higher voltage than the device being powered is risking damage to the device.
Can you plug an 18V into a 9V
Generally you can safely plug an 18v pedal with 9 or 12 V but there is a good chance that it will work poorly… (although it might give an interesting distortion effect).
Is it OK to use higher voltage adapter
An AC adapter supplying electricity at a higher voltage than required will cause the connected device to run hotter. Sending power at a higher voltage will also shorten the lifespan of the device and may fry its internal circuits. Using an AC adapter with a different current rating can be an issue.
Can I use a 7.5 V charger on a 6V battery
If your device only takes 6-6.5V then using a 7.5V supply could well destroy the circuitry in the device and make it unusable.
Can you plug an 18v into a 9V
Generally you can safely plug an 18v pedal with 9 or 12 V but there is a good chance that it will work poorly… (although it might give an interesting distortion effect).
Can I use a 12V adapter for a 10V device
An AC adapter supplying electricity at a higher voltage than required will cause the connected device to run hotter. Sending power at a higher voltage will also shorten the lifespan of the device and may fry its internal circuits. Using an AC adapter with a different current rating can be an issue.
Can you use 9.5 v for 9V
Yes it is, as DC voltage naturally fluctuates by +/- 10% and so devices are built to accept that fluctuation.
Can I use 18V adapter for 12V
18V would be risky, I would not try to plug a 12V device into an 18V battery. But if you happen to have 18V for whatever reason, you can always use a DC-DC converter.
Will 18V damage 12V
You might be able to power a 12V device with 18V, but not for as long. The risk is perhaps a few dollars of wasted expense if it fails. It won't harm the switch but the bulb will burn out pretty quickly, it will also get very hot and could be a fire risk if (as it seems) it's housed in plastic.
Can I use a 6V adapter for 9V
Nope. 6V will not be enough power for a 9V pedal. And 10V or 12V is too much and may break it.
What happens if you use wrong adapter
Choosing an adapter with a higher or lower voltage or current rating may cause the connected device to malfunction. This happens if the adapter's VDC is lower than the device's input voltage even when their current ratings are the same.
Can I use 7.5 V instead of 6V
If your device only takes 6-6.5V then using a 7.5V supply could well destroy the circuitry in the device and make it unusable.
Can I use 12V adapter for 6V
This will run your battery dry and create a thermal runaway scenario, which is very dangerous. Again, some people use a 12V charger to get their 6V battery jump started, but it is never advisable to use a 12V charger to try to fully charge your 6V battery.
What happens if I use a 12V adapter on a 10V device
Using an adapter with a higher voltage will cause the connected device to detect an overvoltage. An AC adapter supplying electricity at a higher voltage than required will cause the connected device to run hotter.
Can I use 12V adapter for 9.5 v
Is it safe to use an adapter that has higher voltage than what is required by the device being powered by it No. Using an adaptor with a higher voltage than the device being powered is risking damage to the device.
Can I use 9.6 V with 9V
You will be fine. A fresh 9volt battery actually puts out 9.6 volts .
Can I use 9V for 8.4 V
That particular battery will be fine for an amp requiring an 8.4V (or higher) power source. "9V" batteries are a series of cells, each cell adding a nominal 1.2V to the voltage rating of the battery.
Can you use a 9v adapter for 18V
Generally you can safely plug an 18v pedal with 9 or 12 V but there is a good chance that it will work poorly… (although it might give an interesting distortion effect). If an 18V ped has digital save data, better not chance it. You may corrupt your sweet patch or loop.
Can I use a 12V 2A power adapter on 12V 1.5 A device
Can you use a 12V 2a charger on a 12V 1.5 a device or 12v 1a device You can use a 12V supply with a higher current rating, but not a lower one. The device will only draw the current it wants, but the supply has to able to put out the maximum current the device wants.
Can I use 18V battery in 20V
Conclusion. So yes, 18V and 20V MAX systems operate with the same amount of voltage. Let me say it again: 18V batteries and 20V MAX batteries produce EXACTLY the same voltage. Still, the guts of each battery cell do vary from brand to brand—even within a single brand.
Can I plug 18V into 12V
The best answer is 'No' because the 12V charger will not have the voltage force to recharge the 18V battery to it's full potential. Generally a charging voltage of several volts above the rated voltage of the target battery is required to fully top off the battery. Can I charge a 9V battery with a 12V charger
