Why are you asking someone to do your homework for you? Ask your teacher.
from the wall it could be 115v ac, or in non American countries that use it 230v ac. internal voltages range from 12v dc, 5v dc, 3.3v dc.
Yes that would work. It's all about the ratio. As long as the rated voltage is not exceeded, as there will be a limit to what the insulation can stand, before breaking down. Lower voltages than rated will be safe.
+12V, -12V, +5V, -5V, +3.3V
A zener diode has a voltage when it reachesbreak over it may be 5v 12vor other voltage as manufactured. The manufacture will produce a 5v zener or is it? This voltage can change from device to device but the mean or nominal voltage will be as close as 5v as possible. So when buying a 5v zener do not expect 5v absolute but a nominal 5 v ZENERS are designed for a specific voltage [ THEREFORE NOMINAL] as mentioned above . depends on the voltage required it can be bought within a specific voltage -/+ a % of the breakdown
If the mains charger is not broken it will work as good as a computer usb port, all they do is supply 5V to the battery charging circuitry inside your camera.
Depending on the application and other factors, it will TYPICALLY be best to use a transformer. If it's a low current application, you can purchase a small 5V power supply transformer for under $20.00, US.
If you have to ask this question, you shouldn't be dealing with 11,000V
By changing the polarity of the source
By changing the polarity of the source
Clarification needed because without being electrified requires explanation.
you need a DAC, not just a buffer.
AC or DC? AC - use a transformer, DC - forget it - not simple or cheap.
AC or DC? AC - use a transformer, DC - forget it - not simple or cheap.
There are actually three pieces to this puzzle - resistance. And you're missing that one.
If the voltage is AC a transformer could be used. If the voltage is DC calculations could be made to apply the proper size resistor to the circuit so that it has a 3.7 volt voltage drop across it.
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.
If a transformer has 20 primary windings and 100 secondary windings, it is a step up transformer. If the secondary voltage is 25v, the primary voltage will be 5v, because the turns ratio is 20 to 100, or 1 to 5.