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.
Located in south-central Siberia, not far from the Mongolian border and surrounded by mountains, forests and wild rivers, Baikal is an immense and breathtaking area of natural beauty. 1  Although it's not the biggest lake in the world in size - that distinction goes to the salty Caspian Sea - it is the largest by volume. Nicknamed the Pearl of Siberia, Lake Baikal holds about 20% of the world's fresh surface water - more water than all of the North American Great Lakes combined. What WWF is doing Supporting Nature Protected Areas in Russia