Plugs and electricity
For Bulgaria there are two associated plug types, types C and F. Plug type C is the plug which has two round pins and plug type F is the plug which has two round pins with two earth clips on the side. Bulgaria operates on a 230V supply voltage and 50Hz.
Electricity supplies worldwide can vary from anything between 100V and 240V. It can be extremely dangerous to use an electrical appliance that is rated at a voltage different from the supply.
As voltage can differ from country to country, you may need to use a voltage converter or transformer whilst in Bulgaria. If the frequency is different, the normal operation of an electrical appliance may also be affected. For example, a 50Hz clock may run faster on a 60Hz electricity supply. Most voltage converters and transformers come supplied with plug adaptors, so you may not need to buy a separate travel adaptor.
All converters and transformers will have a maximum power rating (AMPS or WATTS) so make sure that any appliance you intend to use does not exceed this rating.
In urban areas, it is relatively easy to find devices such as conversion plugs and transformers. They are sold in electronics quarters or at major home appliance mass retailers such as Praktiker, Mr Bricolage, Technopolis, Technomarket, Zora.