What is a diode?plz explain in detail the working principle of fullwave and half wave rectifier?
A diode allows current to flow in only ONE direction. If the cathode end (marked with a stripe) is connected so it is more negative than the anode end, current will flow. 3 types of diode: Small signal diode Rectifier diode Soft fast recovery diode A diode has a forward voltage drop. That is to say, when current is flowing, the voltage at the anode is always higher than the voltage at the cathode. The actual Forward Voltage Drop varies according to the type of diode. For example: Silicon diode = 0.7v Schottky diode = 0.3v Germanium diode = 0.2v In addition, the voltage drop increases slightly as the current increases so, for example, a silicon rectifier diode might have a forward voltage drop of 1 volt when 1 Amp of current is flowing through it. A ZENER diode allows current to flow in both directions. In the “forward” direction, no current will flow until the voltage across the diode is about 0.7 volts (as with a normal diode). In the reverse direction (cathode more positive than the