Month: September 2024

There are two main ways to solve circuits containing diodes: the graphical method and the diode approximation. Graphical Method The image below shows a simple circuit with a diode connected in series with a resistor. Suppose the voltage through the diode is Vd, and the current flowing through this circuit is Id. We can write […]

Ideal Diode In the case of a forward-biased condition, the ideal diode should offer zero resistance. In contrast, in the case of a reversed biases condition, it should offer infinite resistance. Real Diode In reality, the actual diode offers some finite resistance in the forward biased condition and offers really large resistance in the reversed-biased […]

In the breakdown region of operation, the effect due to which it occurs is known as the avalanche effect. Avalanche Effect As we know, in the reverse bias condition, the current is caused by the flow of the minority charge carriers. As the applied reverse voltage increases, the width of the depletion area will increase […]

P-type & N-type Semiconductor P-type & N-type semiconductor by itself acts like a resistor. Doping one side of the silicon crystal with p-type impurity and the other side of the silicon crystal with n-type impurity creates the PN junction. The PN junction is also called a diode. Due to the doping of different impurities, there […]

Conductivity In terms of conductivity, materials can be categorised into three categories, conductor, semiconductor and insulator. The conductivity means how easily the material allows the flow of charge and it is measured in seimens per meter (S/m). Conductor If a voltage is applied to a conductor, it allows the flow of charge. e.g. copper, silver, […]

A diode is a two-terminal semiconductor device that allows the flow of current in only one direction. One terminal is known as the anode, and the other is the cathode. Current can flow from the anode end to the cathode, but not in the other direction. Voltage-Current Graph The diode is a non-linear element, meaning […]