Can a power supply provide too many amps?

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”.

How much current should be in home supply?

Most homes have an electrical service of between 100 to 200 amps. Amperage is a measurement of the volume of electricity flowing through wires, and this measurement can vary between 30 amps in very old homes that have not been updated to as much as 400 amps in a very large home with extensive electric heating systems.

How bad is the cheapest power supply?

The cheapest PSUs were undoubtedly the worst in this test; with the cheapest PSU actually failing totally with a 500 Watt load, and another of the cheapest models literally blowing up in a self-detonation! Straining a power supply results in heat building up within its components, as does the act of simply running it.

What happens when a power supply gets too hot?

I’ll rephrase that: Heat builds up within a power supply when it is being used, and straining a supply causes excessive heat to build up in its components. Heat is an electronic component’s enemy. It causes chemical changes within the component’s chemical structure which causes the individual components to become less effective.

What is the current limit of a 12V power supply?

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.

Can a power supply supply more current than the rated voltage?

The power supply will normally supply the rated voltage up to the rated current. Just because a 12v power supply can supply 10 amps, doesn’t mean that the power supply will force 10 amps through the circuit. It is, generally, not okay to supply a component with more current than its rated for.