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Electronics Paper 2, May/June 2009  
Questions: 1 2 3 4 5, 6 &7 8 9 10 Main
General Comments
Weakness/Remedies
Strength
















Question 8

(a) Define the term peak inverse voltage.

(b) Draw and label the circuit diagram of a non-stabilised full wave bridge rectifier.

(c)Sketch the output waveform of the circuit in 8 (b).

_____________________________________________________________________________________________________
OBSERVATION

The expected answers were:
 (a) Peak Inverse Voltage (PIV) may be defined as the maximum value of reverse

voltage to which a PN junction can be subjected without causing damage.

(b)A full-wave bridge rectifier circuit is displayed below

(c )And its output waveform will have the shape described as follows.

This question was on power supply.  This question was popular with the candidates.  Candidates’ responses in all were adequate.

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