The AC voltage taken from the city network and adjusted to the desired level by means of a transformer is the first step to using a rectifier circuit to convert DC voltage. Rectifier circuits are of two types, half-wave, and full-wave. The half-wave rectifier circuit is not sufficient for a quality power supply design. The output voltage is low and pulsed. In designing a good power supply, the tamdalga rectifier circuit must be used. Two types of rectifier circuits can be designed bridge type and midpoint type. A typical bridge type rectifier rectifier circuit and the waveform taken from its output are given in Figure 1.2.
The waveform of the signal received from the rectifier output is remote from the dc mark and contains various ripples. Filter circuits are used to minimize the fluctuations on the signal to a minimum dc voltage. There are various types of filter circuits (RC, C, LC, etc.).
The most practical and economical filtration process is done with condensers. In Figure 1.3, the sign and filter operation from the rectifier output are shown graphically. We will not overstate the operation and features of the rectifier and filter circuits. Just a reminder, assuming you know these things beforehand.
Finally, in figure 1.4 a complex dc power supply circuit, the waveform of the output signal and the dc value it can take are given. The capacity value of the condenser used for filtering at the outlet is important. A capacitor with large capacitance gives better results.
Applications and Uses of Rectifiers
The primary application of the rectifier is to derive DC power from AC power. Rectifiers are used inside the power supplies of almost all electronic equipment. In power supplies, the rectifier is normally placed in series following the transformer, a smoothing filter, and possibly a voltage regulator. Below, we have discussed a few rectifier applications:
