The usage of ensure vs. insure is very important from a contractual perspective, while they sound very similar they can have very different meanings in a legal context. Insure means to safeguard against loss or damage, typically through the ... Read more
Electrical sockets (outlets) in the People's Republic of China usually supply electricity at between 220 and 240 volts AC. If you're plugging in an appliance that was built for 220-240 volt electrical input, or an appliance that is compatible with multiple voltages, then an adapter is all you need.
The use of dBm and dBv has been deprecated and replaced by the dBu unit which is measured regardless of impedance. When +4dBu or -10dBV values are reconciled to the other's scale and the actual difference in voltage is compared you can see that there is a 11.79dB difference in voltage levels.he unit names dBu, dBv, dBV, and dBm all have case sensitive spellings and have specific defintions regarding audio signal levels. Professional analog gear is measured with dBu and dBv and dBm unit scales.