This type of coma is usually reversible once the blood sugar is corrected. Oxygen deprivation: Oxygen is essential for brain function. Cardiac arrest causes a sudden cutoff of blood flow and oxygen to the brain, called hypoxia or anoxia.
The external power supply is the AC power adapter that converts household AC electricity voltages to the much lower DC voltages needed to charge a mobile phone's internal battery.
But look at how power is expressed; not in dB, but in dBm or dBw. Say we have some power P. We can express P in dBm or. dBw as: â¦. the output power is 5 dBw â¦. or. â¦. the input power is 17 dBm â¦.