design and construction of uninterruptible power supply
The uninterruptible power supply (UPS) is design to help in the offices, workshops and house hold appliances, due to the unstable power supply being supplied by (NEPA) presently known as Power Holding Company of Nigeria (PHCN) usually supply to us. Continue Reading
contruction of an 500w transistor amplifier
The design of this 30 volt Audio Amplifier with volume, table and bass control which was done wit ht he combination of five (5) different circuit which are interconnected during or after construction. This amplifier operates with an option of a left and right channel. The combination of these circuit include this main amplifier circuit (which co... Continue Reading
design and construction of 45w audio power amplifier
A battery charger is an electrical device employed for charging batteries. This batteries that are usually charged by battery changer are the storage battery charger are the storage batteries also known as â€�“accumulatorâ€Â� the battery changer changes. The alternating current form the power line into d.c suitable for charging. Continue Reading
design and construction of a multiperpose security system with alarm and display
This project report is a thesis written specifically to cover the design analysis construction, test and packaging of a multipurpose security system from electric component that can be easily be obtainable from the market. Continue Reading
the design of a 500 watts uninterruptible power supply with voltage low indicator [inverter]
As new ideas unfold and technology become advanced with business increasingly being dependent on technology for their fundamental operation; the need for system availability is of paramount importance. Uninterruptible power supply [INVERTER] maintain continuous supply of electric power to certain essential equipment that cannot be shut down unexp... Continue Reading
design and construction of a 60 watts power amplifier
An audio AMP is basically a system which is used as a means of increasing the level of sound or audio signals for maximum use. A public address system consists basically of microphone, Amplifier and speaker(s) to facilitate the communication to intelligible speech to groups of people or an audience. The main purpose of providing sound reinforcem... Continue Reading
design and construction of sound detector with alarm system
This project is design and construction of a sound detector with alarm system was done primarily to detector sound. It can be use in industrial and domestics. It employ four discreet stages with power supply which power the system. The 1st block is pick up amplifier containing the microphone and the input which serve as a transformer which the f... Continue Reading
the design and construction of electric arc welding machine
Sequel to the vast need and use of iron rods, metal bars and pipes, right from the domestic level up to industrial extent, the arc welding machine was built in order to ensure that the ulterior motive of the manufacturers of these products (iron rods, metal bars and pipes) by their manufacturers is being achieved as part f technological advancement... Continue Reading
android phone key
The advancement of technology for the past decade has definitely triggered the need for developing more advanced devices. The traditional door lock system which comprises of a physical key and lock is slowly fading away. Although it is still considered efficient, a major key issue does occur which is the hassle of carrying a set of keys aro... Continue Reading
design and construction of 45w audio power amplifier
This thesis gives the account for the design and construction of a 45W Audio Power Amplifier with the objective of producing a reliable and cheaper amplifier that can be used in a household or stage. Continue Reading
design and construction of an automatic phase selector
This is the design and construction of an Automatic Phase Selector. In the construction work, LM324 integrated circuit (comparator) and 2N2222 transistors were used as active components alongside other passive components. The circuit components were mounted on a Vero board. Result shows that, when the three phase A.C inputs: Red phase (P1), yellow ... Continue Reading
design and construction of 25amps single phase automatic change over
The automatic change over switch makes use of protective relays and contractors among other things which constantly monitor the power system to ensure maximum continuity of the electrical service with minimum damage to life and property. Continue Reading
the design and construction of a three phase automatic phase selector
The basic aim of the design and construction of this three phase automatic phase selector is to demonstrate how contactors can be used to switch in between three lines or phases e.g â€�“RED, YELLOW AND THE BLUE PHASEâ€Â� without interfering with the contacts. Continue Reading
design and construction of 12volts car battery automatic charger with voltage level indicator and charging process display
The need for a home used charging device is timely, given that daily avoidable accidents occur on our highways due to SLI (starting, lighting and Ignition) faults in motor vehicles. Continue Reading
construction of 200w uninterruptible power supply
The general objective of the system is to provide efficiency in the use of power suppliances by ensuring continuous availability of power supply in the absence of NEPA. Uninterruptability of the system made it possible to eliminate all suspense arising from NEPA outage during the execution of an important and urgent assignment requiring Continue Reading
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