The position of the notch on the right identifies the voltage used by the module.
The width of the notch <<<WRONG ANSWER! The width will be the same, but the notch can be in a different position.
Please do us all a favor, if you don't know what you're talking about then don't post.
By looking at the notch on the right
The notch on the right identifies the voltage used by the module. The position of each notch not only helps identify the type of module, but also prevents the wrong kind of module from being used on a motherboard.
All memory modules have an identification code to enable the correct dimm to be used. The code has never been designed to give any other information than the SDRAM on the DIMM. Only by going to the manufactures DATA specification sheets can voltage, dwell times, etc be found
To convert AC voltage to DC voltage.
No. An hid bulb has a transformer (ballast) that produces a certain voltage needed to fire the gas in that lamp.
Only small personal generators generate a voltage of 220 volts. This level of voltage is used usually during power outages. For voltages that power the electrical grid, the voltage is generated at a much higher voltage and then transformed by the use of transformers, into the voltage that is required by different distribution services.
An electricity substation is needed to change the high voltage needed for transmission of power over a distance down to low voltage needed to supply houses etc.
240V
Spark plug voltage is high tension voltage, needed to jump a spark between the plus and minus poles. Needed tension is about a minimum of 10.000 Volt between the poles.
A light bulb is manufactured to operate on a specific voltage. The voltage can be a low as needed and the manufacturer will compute the size of the filament that is needed for a specific wattage. If you are referring to a threshold voltage then that is another question that needs to be asked.
5vts.
A: LEDS are devices that needs a certain voltage and current typically 1.8 and 20 ma