Unless the computer has a switch on the back allowing you to use both dual voltages and frequencies, the computers internal clock will run faster.
Nothing happens. The stereo has a transformer that converts the power to DC, and 50 or 60 Hz input makes no difference.
Stereo can't work unless sufficient voltage , same will be connected to higher input voltage your system will be damaged.
input 220v ac & output 24v dc
The compressor may run slightly faster, but little else. You should get away with it without damage. Any timer circuits may be inaccurate.
Probably nothing. There is a slight chance that it might make a difference but i doubt it. Problem is that it is very likely that this will make your warranty void. I would call the manufacturer and ask if I were you.
Yes. If the computer power input is only rated for 110V input, you can power it from 220V by using a voltage converter from 220V to 110V with appropriate wattage. Some computer power supplies also have a switch for setting 110V/220V in which case computer can be powered from 220V after changing the setting. Most of the portable computers/laptops have power adapters which are rated for universal voltage (e.g. my Dell laptop AC adapter is rated for 100-240V 50-60Hz).
There should be no problem but you must check it to make sure the power transformer (the heavy component inside made of iron and copper) does not get hot while operating, because it runs at a 20% higher core flux density at the lower frequency.
No
80
high voltage pass 220v instead of 110 to xerox 7335 machine
Typically, a 100 ohm resistor is used to connect a 1.5 volt led to a series 220v ac adapter. Many LEDs can be connected into a string using the resistors.
Must match the rating on your computer. More typical connection is 110-120VAC. If your computer is rated for 220-240 VAC you would need a different plug. It would draw 1/2 the current at 220 than 110.