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Written Questions: Active Circuits

<^< Multiple Choice Quiz: Active Circuits | Course Index | Assignment: Active Circuits >^>(:nl:)

The section on the right contains a list of written questions. These can be printed out for your own use.

1. Sketch the circuit diagram of a simple single-stage transistor amplifier. Label your diagram clearly. State the function of each component used and give typical values.

2. Sketch the circuit diagram of a simple power supply using half-wave rectification. Label your diagram clearly. State the function of each component used and give typical values.

3. Sketch the circuit diagram of a simple power supply using full-wave rectification. Label your diagram clearly. State the function of each component used and give typical values.

4. Sketch a typical set of waveforms for a low-voltage DC power supply that uses half-wave rectification. Your waveforms should show:
(a) the voltage developed across the transformer secondary winding
(b) the voltage developed across the reservoir capacitor
(c) the voltage present at the output of the power supply.
Label your diagrams clearly.

5. With the aid of a labelled diagram, explain the action of a full-wave bridge rectifier.

6. A transistor switching circuit is to use an NPN silicon transistor having a common-emitter current gain, h'_FE_', of 40, a supply voltage of 10 V and a load resistance of 500 W.
(a) Sketch a labelled circuit diagram for the circuit(:nl:)(:table style="clear:both":)