Consumer Electronics

RECTIFIER CIRCUITS

There are various standard rectifier circuits, the choice depending upon the required dc voltage and load current and on economic considerations coupled with the required reliability. Since the voltage required for transistor circuits is normally low, in the range of 10-100 volts, a step-down mains transformer will generally be used.

(1) Half-wave Rectifier Circuit: Half-wave rectifier circuit is the simplest rectifier circuit and is shown in Fig 21.1 (a). If the rms voltage of the transformer secondary is E, the dc voltage across the reservoir capacitor will be () E with no load, falling to approximately E at full load, depending ...