State the meaning of rectification.
The graph in Fig. 1.1 shows the voltage output from an alternating current supply.
Fig. 1.1
Sketch the variation with time t of the output voltage when the following are applied:
In rectification, a smoothing capacitor is often necessary. The resulting graph of the output current against time gives a 'ripple' shape, as shown in Fig. 1.2.
Fig. 1.2
State how the 'ripples' in the graph can be reduced.
The circuit in Fig. 1.3 shows a diode bridge rectifier connected to an alternating power supply.
Fig. 1.3
State the diodes that will conduct when
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