Question 4

(A) State three types of multivibrators.
(b) A tuned collector-oscillator of a radio receiver having an inductance of 40 x 10-6H is required to receive a station broadcasting at 103.1 x 106Hz. Calculate the value of the effective capacitance required for smooth operation.

(c) Fig. 4 is a block diagram of an power supply unit.



Use Fig. 4 to complete Table 2.

Table 2

Blocks	Circuit represented	Function of the circuit
P
Q
R
S