Phototransistor Construction and Working Principle: The sensitivity of a photo diode can be increased by as much as 100 times by adding a junction, resulting in an NPN device. A simple representation of the Phototransistor…
What is a Floating Point Number? The real numbers considered so far were represented in what is known as fixed point notation. In such notation, the position of the decimal is fixed for a fixed…
Virtual 8086 Mode in Microprocessor: The virtual 8086 mode is a special operating mode of the Pentium processor and it is a subset of protected mode. In this mode, two 8086 application programs can be…
Vacuum Circuit Breaker: Although the advantages of interrupting the arc in a vacuum were recognized as early as the nineteenth century, this did not find wide application till a few years ago. This was because…
Voltage Regulation Formula of Transformer: Voltage Regulation Formula - Constant voltage is the requirement of most domestic, commercial and industrial loads. It is, therefore, necessary that the output voltage of a transformer must stay within…
Draught System in Power Plant - Definition and Classification Draught is an essential part in thermal power plant. The functions of the draught system are: To supply required quantity of air to the furnace for…
Fabrication of PNP Transistor in Integrated Circuit: There are different ways of Fabrication of PNP Transistor in Integrated Circuit. The important means of integrating PNP Transistor are Vertical PNP transistor, Lateral PNP transistor and Triple…
Sequence Impedance and Networks of Transformers: It is well known that almost all present day installations have three-phase transformers since they entail lower initial cost, have smaller space requireÂments and higher efficiency. The positive sequence…
Nodal Analysis Examples: Nodal Analysis Examples - we discussed simple circuits containing only two nodes, including the reference node. In general, in a N node circuit, one of the nodes is chosen as reference or…
Tapped Field Control for DC Series Motors: Tapped field control for dc series motors is another method of increasing the speed by reducing the flux and it is accomplished by reducing the number of turns…
