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How do I know what AC adapter I need?
The right AC adapter for your device is one with matching electrical ratings. The device’s input voltage and current must match the adapter’s output voltage and current. Check the device’s product label or user manual to see its rated voltage and current.
Are all AC adapters the same?
– Yes, they are likely interchangeable even though voltage is not the same. This is because the voltage difference is within specs, and I am GUESSING you could go even higher or lower in voltage.
Does it matter what AC adapter I use?
No, amps do not have to match, but the power supply or charger must be able to supply enough amps as required by the device being powered or charged. In practical terms, that means the amperage rating of a power supply or charger must match or exceed that required by the device it is connected to.
Are AC adapters universal?
Most AC adapters can be used for a wide verity of devices no matter what may be printed on them. The thing to look for is the input and output voltages of the adapters and whether it is AC or DC. Next, take note of the adapter output amperage rating and the type of connector, if any.
Can I use 4.5 V instead of 5v?
They’re very stable on the output voltage and can kick out an amp or so. It’ll work fine.
What is the difference between an AC adapter and an AC DC adapter?
A DC adaptor differs from an AC adaptor in that the DC adaptor converts AC electricity into DC electricity. For example, a 12 V DC adaptor sold in the United States will convert 120 V AC at 60 Hz into 12 V DC. Like its AC counterpart, a DC adaptor is also rated for maximum power output in watts.
What happens if you use wrong AC adapter?
If the current is the same but the voltage is too high, the device will shut itself off. It can run hotter than normal if it doesn’t, which can shorten the life of the device or cause immediate damage.
How do I know what size DC plug I need?
Listing of DC coaxial connectors Connector size is often listed in the format OD (outer diameter) × ID (inner diameter) × L (length of barrel) and expressed in millimeters. Designations may vary between manufacturers. Coaxial plugs that have a male center pin will have another measurement, Center Pin Diameter (CPD).
Can I use 5v adapter for 9V?
No! It might work for few minutes, but eventually the voltage drop on the internal regulator will cause the circuit to overheat and burn.
How do I choose the right power supply for my electronics?
Power Supply Voltage If your device needs 9V, you need a 9V power supply. If your device needs 5V, you need a 5V supply. Also, if your device needs a DC voltage (which is the most common), you need a DC output from your power supply. If your device needs AC voltage, you need an AC output.
Can I use a 20v charger on a 19.5 V laptop?
It’s best to use charger of same specification and model. 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.
Can I use a 9V adapter for 7.5 V?
However if the device is relying on the regulated voltage from the adaptor and has no internal circuit to control or limit overvoltage, then that 9v adapter may damage your device. That said, there are 7.5v devices designed with tolerances wide enough that the 9v you provide it won’t make any difference at all.
Can I use 12V adapter for 9v?
If you have a 12V adapter, you might wonder whether you can use it to power your 9V guitar pedals. 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.
Can I use a DC adapter instead of AC?
Generally speaking, substituting an AC supply with a DC source with the same constant voltage as the RMS voltage will be OK, but there is a chance that the device will be designed for voltage closer to the AC peak voltage. To be sure, you can use a DC supply closer to 1/(. 707) = 1.414 x RMS voltage.
Will any 9v adapter work?
any 9v with the correct polarity (- inside +on the outside i think) that supplies enough amperes (250 milliamperes minimumi think) will work fine. As long as the voltage matches up, 9v DC pedal with a 9v DC power supply, you will be fine.
Can I use 4.5 V instead of 4V?
if operating the logic chips using 4V, it should be OK. I would not try using 4.5V or any higher voltages. Don’t chance it; use a 3.3V low drop out voltage regulator.
Can I charge a 4.2 V battery with a 5V charger?
Can I charge a 4.2 V battery with a 5 V wall charger? – Quora. Yes you can, but the concern is what happens when the voltage exceeds 4.2 volts. In the case of lread acid or NiMH types nothing except a slight outgassing or mild heating, in the case of a li ion ,it could result in a fire. .
Can I charge a 3.7 V battery with a 5V charger?
Generally, a 3.7V lithium battery needs an overcharge and overdischarge protection circuit board. Lithium battery with protection circuit board can be charged with 5V voltage(4.8V to 5.2V can be used). For 3.7V lithium batteries, the charge cut-off voltage is 4.2V and the discharge cut-off voltage is 3.0V.
