Fig. 1: Symbol of a Diode
Fig. 2: Graph showing electrical characterstics of an Ideal Diode
Fig. 3: Graph showing comparison of electrical characterstics of Ideal and Practical Diodes
Types of Diodes
Fig. 5: Image showing various types of diodes
Fig. 6: Image showing construction of a generic diode
Fig. 7: Graph of Linear Graded Dioe and Step Graded Diode
Principle and Operation
Fig. 11: Image showing working of diode in reverse bias configuration
Fig. 12: Graph showing characterstics curve of diode
The current that flows through a diode is given by the equation:
where ID – diode current. (Positive for forward and negative for reverse)
Fig. 13: Graph showing characterstics of diode resistance
Fig. 14: Graph showing characterstics of diode switching time
A diode is marked with a bar which indicates the cathode terminal of a diode which is as shown in the figure below:
Fig . 15: Image showing identification of diode terminals
Fig. 16: Circuit Diagram of Diode based Half Wave Rectifier
Fig. 18: Circuit Diagram of Diode based Bridge Rectifier
Fig. 19: Circuit Diagram of Diode based Clipper
Fig. 20: Circuit Diagram of Diode based Clamper
Rectifying Diodes in Market:
· Another series of diodes is IN5400 to IN5408 with maximum forward voltage of 1.2 V and 3A being the maximum rectifying current. The maximum reverse current are 5 uA and PIV (Peak Inverse voltage) varies from 50V to 1000V.
Testing of a Diode
Filed Under: PIC Microcontroller, Tech Articles
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