The NOT gate
(i) When A = 0, the base of transistor also get earthed. Now emitter base function is not forward biased but base-collector function is reverse biased. As the emitter current is zero, the base current is also zero and hence the collector current will also be zero. Hence the outpu..
(i) When A = 0, the base of transistor also get earthed. Now emitter base function is not forward biased but base-collector function is reverse biased. As the emitter current is zero, the base current is also zero and hence the collector current will also be zero. Hence the outpu..Junction Transistor
Junction Transistor - It is a semiconductor device having two junctions and three terminals. The two types of transistors are p-n-p transistor and n-p-n junction transistors. A p-n-p transistor is obtained by sandwiching a n-type semiconductor betwe..
Junction Transistor - It is a semiconductor device having two junctions and three terminals. The two types of transistors are p-n-p transistor and n-p-n junction transistors. A p-n-p transistor is obtained by sandwiching a n-type semiconductor betwe..Introduction
In the chapter on current electricity, we had learnt about the flow of charges, conditions to produce the flow and how different materials respond to an external electric field. We had seen how materials are classified as conductors and insulators. In this chapter, we will study a new type of mater..
Elementary ideas about I.C
If the electronic compounds like resistors, capacitors, diodes and transistors are compactly put in a small piece of material, it is called as integrated circuit. This single small package performs a complete electronic function. Thin slice of crystal of silicon of the order of 0.5 c..
If the electronic compounds like resistors, capacitors, diodes and transistors are compactly put in a small piece of material, it is called as integrated circuit. This single small package performs a complete electronic function. Thin slice of crystal of silicon of the order of 0.5 c..Hydroelectric Power Plants
The electricity produced from flowing water is called Hydroelectric power. The world's first hydroelectric power plant was set up in 1882 in Wisconsin USA. It had a very small output, supplying power only for about 250 light bulbs. But from this small start the production of hydroelectric..
Other Energy Changes in Chemical Reactions
Energy changes in chemical reactions can also take place in forms other than heat, such as light, electricity, mechanical energy, etc. Some common examples are: The burning of petrol or diesel in motor engines of cars, trucks, tractors or buses produces mechanical energy, which is used..
Energy changes in chemical reactions can also take place in forms other than heat, such as light, electricity, mechanical energy, etc. Some common examples are: The burning of petrol or diesel in motor engines of cars, trucks, tractors or buses produces mechanical energy, which is used..Basic Principles of Wireless Radio Communication
Hz (audio-frequency range) cannot be efficiently radiated and do not propagate well in space. (ii) Simultaneous transmission of different signals by different transmitters would lead to confusion at the receiver. In order to solve these problems; we need to devise methods to convert or translate th..
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