Technotips

Basic circuit of a Diode as a switch In the previous post we have seen the basic working of a diode . Now in this post let us see how a diode can be used as an electronic switch in the electronic circuits. Let us study the operation of diode as switch from the following circuit In the above circuit a bulb is connected to a battery through the diode.Therefore the diode acts as either " ON" switch or as an "OFF" switch depending on biasing. Now in the following circuit let us see how a diode is working as an "OFF" SWITCH: As the diode positive side is connected to the negative of the battery and negative of diode is connected to positive of the diode, the diode is in reverse biased condition. We have seen that the diode do not conducts an electricity in reverse biased condition and no current flows through it. Therefore the diode acts an " OFF " SWITCH in reverse biased condition. The Bulb is OFF bacause th

Working of a Diode what is a diode actually? Diode is a semiconductor device. It allows the current only in one direction to pass through it. Symbol of the  Diode: How does it works ? When it is forward biased it allows the current to pass through it.   And When it reverse biased it blocks the current to pass through it.. What is biasing ?  Biasing means applying external voltage. It is of two types : 1.Forward biasing                                  2.Reverse biasing  Forward biasing of a diode: when positive terminal of the battery is connected to positive of the diode and negative terminal of battery is connected to the negative of the battery the condition is called Forward biased condition. Reverse biasing of a diode : when positive terminal of the battery connected to negative of diode and negative terminal of battery is connected to positive of diode then this condition is called reverse biased condition