With an invertor/rectifier or voltage multiplier.
Generally, there will be a 12+ volt rail, a 5+ volt rail and often a 3+ volt rail.
You can not change it. 440 volt is by design. However you run it with 220 single phase supply, but it would run far lower power.
3 hours and 45 minutes
A variable power supply has a control to adjust the DC output voltage from 0 to 12 volts. It is used for testing electric project's such as amplifiers and other electric devices. It can be used to replace other fixed voltages power supplies such as the srandard 3 volt, 5 volt, 9 volt and 12 volt units.
No, it will destroy the 3 volt device.
60÷45= approx.1.33333 45 X 1.33333= approx. 60 Therefore the % of change is approx 133.333. or 133 1/3
no
3 volt bulb gives the biggest resistance
3 hours. When going from Oregon (which is in Pacific Time) to Washington DC (which is in Eastern Time), add 3 hours. When going from DC to Oregon, subtract 3 hours.
No
45 and 3/5 or 228/5
AC or DC?? If it is DC voltages, series the sources together. eg. + 1.5V - to + 1.5V - = 3 VDC. If AC you will have to find a transformer in that range, 1.5VAC primary to 3VAC secondary.