Analog Electronics - GATE practice papers - Electronics & Communication for Q. 507
Q. What is the possible form of output generation in the secondary by the centre-tapped primary of push-pull amplifier due to combination of two collector currents? (Marks : 01)- Published on 19 Oct 15a. sine wave
b. square wave
c. cosine wave wave
d. triangular wave
ANSWER: sine wave
In accordance to the configuration arrangement of push-pull amplifier, the centre-tapped secondary winding of transformer provides equal and opposite voltage to base circuits of the two transistors.
Thus , the supply voltage is connected between bases and centre tap. Transistor T1 provides amplification to every half cycle of the signal by leading it to appear in the upper half of the primary winding of output transformer by the ultimate result of combining two collector currents.
This eventually generates the output in the form of sine wave.
