Indian Institute of TechnologyHyderabad

A Working Model Of A Step Down TransformerBy:

Paras KapoorEE12B1022

A Working Model Of A Step Down Transformerrmer

Indian Institute of TechnologyHyderabad

Requirement of components to make a transformer:1.Double layer copper magnetic wire.

2.Plates or sheets of silicon-iron.3.Waxed paper or press board.

4.Brackets and screws.5.Spool or formwork(plastic).

6. IN5408 diode with 3 amp forward current rating.

Working of An AC/DC Transformer

Indian Institute of TechnologyHyderabad

Calculating the core area of the transformer.C.A. = side * side of the spool.Calculating turns per voltage:TPV = 1000/(4.44*C.A.*flux density*AC frequency).Standard value of flux density of steel may be taken as 1weber/sq.m .Primary current = (secondary volt*current)/(primary volt*efficiency).Number of turns = TPV*(primary voltage).Secondary coil number of turns = TPV*1.04*(secondary voltage).Also(primary turns)*(secondary voltage)=(secondary turns)*(primary voltage).

Calculations Required To Make A Transformer

Indian Institute of TechnologyHyderabad

Primary voltage = 228.C.A.= 5.1*4= 20.4 cm^2.T.P.V. = 1000/(4.44*50*1*20.4) = 2.2Primary number of turns =1200 turns.Secondary number of turns = 230.Secondary voltage = 44 V.(by calculation).

Calculations made by me.

Indian Institute of TechnologyHyderabad

Using diode The IN5408 diode is an ordinary silicon diode. It has a 3 amp forward current rating, and a 1000 volt peak reverse voltage rating.Using Four diode in combination.

Converting AC to DC

Machine to make core windings.

Indian Institute of TechnologyHyderabad

Simple Procedure to Make It…