Electronics Paper 2, Nov/Dec. 2010

Questions:	1	2	3	4	5	6	7	8	9	10	Main

General Comments
Weakness/Remedies
Strength

Question 8
(a) Draw a full-wave centre tapped rectifier circuit to produce a negative output voltage across a load resistor. (b) Sketch the (i) input waveform for each diode in (8)(a); (ii) output waveform across the load resistor in (8)(a).
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OBSERVATION
The expected answers were: (a)(i) (b)(i) The question was on Power Supply. It was unpopular with the candidates. As reported by the Chief Examiner, none of the candidates appeared to understand the centre-tap connection. The performance was very poor.