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Sometimes things go wrong only way to fix them is start from the beginning

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Transformer

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            A transformer is a magnetically coupled device in which magnetic field produced by time-varying current induction voltage in another. An electric transformer changes ac electric power at one voltage to another. The transformer two coils, these are electrically separated but linked through a common magnetic current circuit. AC current in one coil produce a flux that links with other winding and induces voltage in that. STANDARD TRANSFORMER ACCESSORIES 1)       Thermometer Pockets This pocket is provided to measure temperature of the top oil in tank with mercury in glass type thermometer. It is essential to fill the pocket with transformer oil before inserting the thermometer, to have uniform and correct reading   2)    Buchhol's Relay  ...
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Automatic Irrigation system using 8051

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 INTRODUCTION https://www.youtube.com/watch?v=HPO6GTjQNTs In a country like India, the agriculture plays the important role in the economy and development of the country. At the present era, the farmers have been using irrigation technique in India through the manual control in which the farmers irrigate the land at the regular intervals. This process sometimes consumes more water or sometimes the water reaches late due to which the crops get dried . There is a need in the residential/commercial irrigation industry for an irrigation controller that responds to soil moisture sensors in individual zones as a way of conserving water. An ideal controller should be "user friendly", i.e., easy to program and requiring a minimum number of keys or push-buttons to operate the controller. It should also allow irrigation to take place in zones where watering is required, while by passing zones where adequate soil moisture is indicated- To add flexibility, it should be possib...
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DC GENERATOR

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A generator is a machine which converts the mechanical energy into electrical energy. It works on the principle of Faraday's law of electromagnetic induction. DC Generators produce the direct current. Ordinary generator working             The figure shows two pole and one coil generator, two slip rings are connected with the two terminals of the coil.  Figure 1: The coil is at 90 degree to the field, there will be no cutting of flux so no emf is produced Figure 2: The coil sides are parallel to the field; hence maximum emf will be induced Figure 3: The coil is in the same position as in figure 1, but ab side is downwards and cd is upwards, there is no voltage will be induced. Figure 4: It is similar to figure 2, maximum emf is induced but in the reverse direction. Figure 5: In this way a cycle of ac voltage is completed.  Commutation Commutation in a dc machine is the process of converting alternating c...
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