A power supply is used to reduce mains or three phase electricity, often at 240 Vac or 440 Vac down to a voltage that is usable, such as 12 Vdc. amps maxium per connection (that’s often why you’ll find some devices that connect to two USB ports, because they need more than 0.

Can I Use a Charger With the Same Voltage but Different

If you look closely at the small print on many power supplies, you’ll see they’re rated for anything from 100 to 250 volts. Here’s the catch: just because the physical plug fits into your device does not mean that the polarity is correct. If the device expects the center connector to be positive and the outer ring to be negative, your power supply’s connector must match. Power supply efficiency is known as the amount of power actually provided to the internal circuitry, divided by the amount of power drawn from the mains supply. The losses increase a the square of the current so a doubling in load will more than quadruple the IPlug a device expecting 110 volts into a 220-volt socket, and you’ll probably see sparks followed by darkness as the circuit breaker trips. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. I know that with my Dell laptops, if the chip in the charger goes bad (the chip that tells the Dell laptop that this charger is the correct charger for the computer), it will no longer charge the battery, and the laptop will draw less power (or amps – but Amps times Volts gives you Watts – or power) – thus slower laptop. But I thoroughly agree with your working rules; get the voltage exactly right, and only substitute a higher current power pack where a lower current one used to be.

12V 1.5a (1500ma) power supply adapter with 10mm x 5.5mm x 2

As long as the correct voltage is used, a device will draw only the amperage it needs, meaning there will not be “too many amps”. If you load up a power supply, you will have losses in the wire that connects the supply (wall wart) to the device.

Thus, as long as you replace your power supply with one capable of providing as much or more amps than the previous, you’ll be fine. This is one reason why getting the voltage correct on a power supply is so critical, because it can, in a sense, “push” too much electricity through a device and cause it to overheat or be damaged. Power supplies are a crucial aspect of any electrical equipment, providing reliable power to machinery, computers or other technology devices.

12V 1500mA 1.5A AC/DC 2.1mm Power adapter Power Supply

Robust and reliable our plug-in AC to AC adapters have been designed, tested, and approved to the highest standards. An example being a water pipe with a pressure/voltage of 10psi and a diameter(volumn)/current of 1 inch allows so much water through. The output amperage must match or be greater than that required by the device being charged or powered. in 2003 as a place to help you find answers and become more confident using all this amazing technology at our fingertips. Thinking of purchasing a 12 V ac adapter, well look no further, here at RS we offer a range of high-quality power supplies to suit your every need.To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below.

12V 1.5A UL Listed 18W AC DC Switching Power Supply Chanzon 12V 1.5A UL Listed 18W AC DC Switching Power Supply

If a PSU is 50% efficient and is required to provide 50 Watts of power, 100 Watts will be drawn from the main supply. If the charger cannot supply enough of the current that the device wants, if may decide that it doesn’t have enough to run. AC chargers are usually represented by a tilde (~), and pulsating DC chargers are indicated by a solid line over a dotted line, kind of like highway dividers where there’s no passing in one direction. Your water analogy is incomplete: voltage is the water pressure, and amperage is the SIZE of the hose. 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.USB wall chargers have to provide the same voltage (like the article said, it’s fixed), but some are capable of providing higher amperage for those devices that can use it. Depending on how different the supplied voltage is from what’s required, the device may simply fail, it may work “kind of”, or it may appear to work at the cost of a much shorter lifespan. The PSU also converts the current rating, in the form of AMPS, to a level that is safe for the device that is to be powered. Remember what the article said: the voltage remains constant, and the amperage is dependent on the device’s needs, regardless how many are connected.