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- #Project report on decimal to bcd priority encoder driver
- #Project report on decimal to bcd priority encoder manual
To introduce a circuitry that will sense power outage and at the same time sense fluctuationin the power supplied to the load at any point time.
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The aims and objectives of this project is to:ĭesign and construct an automatic change-over switch with indicator that will switch load from the mains power supply (PHCN) power supply (Generator) with simplicity. Panel indicators are used to show the status of the system. Once the Gen set phase is selected, a switching transistor fires an SCR which conducts large battering current to the ignition coil of the Gen set. This section switches ON the Gen set when all the NEPA phases are low, OFF or faulty. The Gen set switching section is achieved using the least prioritized phase.
#Project report on decimal to bcd priority encoder driver
The fourth is the driver stage which comprises of NPN transistor that energizes the electromagnetic relay which switches the phase in priority. The third block is a BCD – to – DECIMAL Decoder (7442) used to decode the prioritized phase. The output of thin block is fed into a priority encoder (74147) which selects the most prioritized phase at a time. The first block is a 3-phase MAINS regulated dc power supply unit that powers the overall circuit and acts as the input. This system is realized in several functional blocks all combined to form one functional system. This project work is embarked upon to eliminate nearly every shortcomings associated with the manually operated type to ensuring that it is fully automated. It has so many advantages over the existing ones/types. It can be used in residential houses, offices and most importantly, in factories that required constant power supply.
#Project report on decimal to bcd priority encoder manual
It eliminates the time and energy spent in operating the manual change – over and starting of Gen.
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This project deals with the design and construction of automatic change-over switch with indicator. 1959, the advent of microelectronics has paved way to modify the manually operated change-over switches. Manual power change-over switches have been in existence and in different forms and shapes. Power control and automation is a part of this field which is applied in virtually anywhere electrical power is used, generated or transmitted. Industrial automation and control has contributed immensely to the high rate of the world’s technological growth.