Lights on Transformers used for laptops and small devices?

How much energy, or units do the LED's found on transformers which are used for laptops, hard drives and other devices?



Do they use loads of electricity? or hardly anything - eg 0.001 unit?Lights on Transformers used for laptops and small devices?Most LEDs found on power supplies and such have forward currents of less than 100 milliamps. Voltages vary but will generally be in the range of which a standard computer is going to supply (i.e. 3V, 5V, 12V). Or, to save costs, odd ball voltage LEDs will be utilized and the voltage brought down via an LED driver circuit on the power supply or motherboard.Lights on Transformers used for laptops and small devices?Hardly anything at all. They are very powerless and have very small voltages and current draws