Then the conduction angle for this type of amplifier circuit is only 180 o or 50% of the input signal. This pushing and pulling effect of the alternating half cycles by the transistors gives this type of circuit its amusing âpush-pullâ name, but are more generally known as the Class B Amplifier as shown below.
Like Lake Tanganyika, Lake Baikal was formed as an ancient rift valley, having the typical long crescent shape with a surface area of 31,722 km2 (12,248 sq mi). Baikal is home to thousands of species of plants and animals, many of which exist nowhere else in the world.
Geologists believe that the Baikal has already, been in existence in late Palaeogene. Its origination started not less than 25-30 millions years ago. In the prebaikalian period the relief was not nearly so contrasting as at present, yet it was a mountain relief. Height probably did not exceed 300-500 m above the bottom of the basins, which surrounded these mountains.