- Figure above shows a circuit to produce full-wave rectification.
- Using an ingenious arrangement of diodes, called a bridge rectifier, this reverses the negative half of each a.c. cycle, instead of just blocking it.
- The result is that current always flows in the same direction through the load, no matter which way it leaves the supply.
- Combine a transformer (to reduce mains voltage) with a bridge rectifier and a smoothing capacitor, and you have a mains-operated d.c. power supply – as used in radios, instead of batteries.
- Another method of full wave rectification is arrange two diode to the output of a transformer as show below. A similar result will be produced.