I have never traveled internationally and therefore have never had to worry about electricity before. But when you plan to charge over a $1000 worth of electronics its good to make sure you have it right. For those of you getting ready to travel here is what I have learned.
The US has a standard of 120 Volts and 60 Hz.
Russia's standard is 220 Volts and 50 Hz.
Most of our electronics were made for dual voltage.
Cannon Camera - 100V-240V
iPad - 100V-240V
Sony HD Camcorder - 100V-240V
PSP - 100V-240V
The only thing that wasn't was my hair dryer so I found this one at Wal-Mart...Revlon Tourmaline Travel Hair Dryer.
The voltages listed here are the "nominal" figures reported to be in use at most residential/commercial sites in the country. Most electrical power systems are prone to slight variations in voltage due to demand or other factors. Generally, this difference is inconsequential, as most appliances are built to tolerate current a certain percentage above or below the rated voltage. However, severe variations in current can damage electrical equipment. So you should probably buy one of these....Surge protector. They quoted me $42 including shipping. This will also take care of the adapter issue as well as allow you to charge everything at the same time.