What does outdoor power supply mean in volts

What should a power supply voltage be?

With that in mind, voltage is the essential factor and again should be the same or within a tolerance of 1 volt. A full guide on the key details of any power supply, charger or adapter including voltage, amperage and wattage.

What is the current rating of a power supply?

The current rating of a supply is what it can deliver, not what it will always force thru the load somehow. In that sense, unlike with voltage, the current rating of a power supply must be at least what the device wants but there is no harm in it being higher. A 9 volt 5 amp supply is a superset of a 9 volt 2 amp supply, for example.

What does amps mean on a power supply?

In a nutshell, the Amps rating on a power supply, charger or adapter explains the maximum amount of current that it can safely provide in an hour. Any amperage of charger rated above what's required for your device is safe to use with your device, providing the PSU voltage is the same as the input voltage or within a tolerance of 1 volt.

Why is a 12 volt power supply regulated continuously?

This is done continuously to compensate for input voltage variations and variations in the current the load is drawing. A regulated 1 amp 12 volt power supply, for example, is going to put out pretty close to 12 V over its full AC input voltage range and as long as you don't draw more than 1 A from it.

Will a 12V power supply work?

A supply whose voltage is within -10% / +5% of device voltage rating will usually work and usually not cause damage. In a very few cases it may not work, but this would be unusual. A 19V device will usually operate from an 18V supply. A 16V device may well NOT operate from a 12V supply - in some cases it will.

What happens if a power supply drops its output voltage?

However, nowadays, the most likely response is that the supply will drop its output voltage to whatever is necessary to not exceed the output current. This is called current limiting. Often the current limit is set a little higher than the rating to provide some margin. The "12 V 1 A" supply might limit the current to 1.1 A, for example.