![Anode Cathode (-)](//img.homeworklib.com/questions/51420fe0-c556-11eb-bf57-17000b3d7ace.png?x-oss-process=image/resize,w_560)
Basic concept: Diode is an unidirectional
current device and it allows current to flow from anode to cathode
only. Diode will conduct when forward biased i.e., anode voltage
> (greater than) cathode voltage.
![+ D3 Ion D2 X? ) - T R Vout . I diodes. Lett us analyse the circust first then we will draw wave forms. Assuming ideal Let u](//img.homeworklib.com/questions/519eb7b0-c556-11eb-a372-37ea7bb3b2fc.png?x-oss-process=image/resize,w_560)
![positive voltage freig earthocle voltage areater than anode voltage. so, Do& P₂ are off. state. Le Igno vin cutie 22 Dat Voim](//img.homeworklib.com/questions/522bded0-c556-11eb-b2ee-cd8296059200.png?x-oss-process=image/resize,w_560)
![On the onset of negative voltage, in input. voltage wane form, the circuit becomes some what like displayed below. Consider -](//img.homeworklib.com/questions/52b8c380-c556-11eb-ac7e-b721ec9e63bc.png?x-oss-process=image/resize,w_560)
![Dz x 2 XP AL Voutt St It seeme lake both drodes are turned on as the their anode voltages seems positive. But, since, the sou](//img.homeworklib.com/questions/5397a0b0-c556-11eb-a785-b5a2b3f0f9b7.png?x-oss-process=image/resize,w_560)
![Since cloode D3 is ON, it short-circuits source. as VA2K2 zo drode Dz.is off. The net, circuit becomes; - Tana Part 1 i Voul](//img.homeworklib.com/questions/54176020-c556-11eb-bee2-2152f62d7755.png?x-oss-process=image/resize,w_560)
![Let us summarise - . Vout is zero always. 20 ) none Vin is srnusordal Supply - Zero current is drown at positive half of inpu](//img.homeworklib.com/questions/5493ae80-c556-11eb-9ae9-cd293a33b60e.png?x-oss-process=image/resize,w_560)
Anode Cathode (-)
+ D3 Ion D2 X"? ) - T R Vout . I diodes. Lett us analyse the circust first then we will draw wave forms. Assuming ideal Let us consider a sinusoidal wave form as input bol u volle - Vinf um aume Te Tz - Considering period T1 forst [o ton.]. Drode Da and Drode, D3, are reverse biased because VK3 & Vk2 are experiencing
positive voltage freig earthocle voltage areater than anode voltage. so, Do& P₂ are off. state. Le Igno vin cutie 22 Dat Voiming The above circuit clearly states the current Comput) will not find a closed path to flow. So, Vout=0
On the onset of negative voltage, in input. voltage wane form, the circuit becomes some what like displayed below. Consider - period Tala to 2n) .. . kz V . LA Vout T AL & zt Latitjen e The 'Drode Pi has anode Aj forward braved , which means D1 is on. But in Drode Dy, ky cathode is experiencing positive voltage, so, De is off & the caruit becomes as shown below.
Dz x 2 XP AL Voutt St It seeme lake both drodes are turned on as the their anode voltages seems positive. But, since, the source is directly connected across Diode Az & A node A, experiencing positive woltage, the drode offers zero resistance, hence, entire current flows through Dzonly L vout gt v TI
Since cloode D3 is ON, it short-circuits source. as VA2K2 zo drode Dz.is off. The net, circuit becomes; - Tana Part 1 i Voul + I Sa Hence, output Voltage is O. zeroll zino output voltage. current & very high cument (input) due to short circuiting Output Zero L source.
Let us summarise - . Vout is zero always. 20 ) none Vin is srnusordal Supply - Zero current is drown at positive half of input voltage & very high cument drawn at negative half, due to Short-circuiting of source by Diode 3 . . .