Design Problem Transfo Final Project1 2y2hh

Design Problem Others think that we cannot imagine how life would be without gadgets, but do you ever think that the question should be how would you live without the source of power for those devices? Yes Electricity is one of the necessities even in the past. Today almost all of the devices that are used are actually using transformers. Examples are TV’s, computers, laptops, mobile phones etc... Sometimes these devices malfunction due to voltage problems, aside from that most of these devices are accompanied by the rating need for it to run either from higher voltage to lower voltage and vice-versa. Nowadays most of the devices s don’t know the essence of electricity behavior through their devices and leads to malfunctioning or even cause to wear out these devices.

Principle and Discussion Transformer is an electrical component which is essential on converting voltage to a higher or lower value or even the same. It is a very simple stationary electromagnetic device that works in using the principle of faradays law of induction by converting electrical energy to one another. The transformer uses 2 magnetic circuits from the inside which are both wraps inside the core for it to induct electricity which the core is accompanied by steel laminations to reduce loses in the core. The two windings are isolated from one another but somehow connected through the means of magnetism which allows the electricity commute from the primary winding to the secondary winding. It is when the current flows into the primary winding a magnetic field is developed which induce voltage in the secondary windings. (PAKIDAGDAGAN NG MISMONG PRINCIPLE) Reference: http://www.electronics-tutorials.ws/transformer/transformer-basics.html

Transformer Rating Reference: https://www.quora.com/Why-is-transformer-rated-in-kVA-and-not-in-kW Materials and Equipment Materials

Cost

Magnetic Wire (21 AWG)

php

Magnetic Wire (15 AWG)

php

EI Core (4 kg)

90.00php/kg

Bobbin

48.00php

Fish Paper

35.00php

Casing

149.00php

Masking tape

10.00php

Shrinkable wire small

36.00php

Fuse (5A 30mm)

35.00php/set

Fuse Box

65.00php/set

Shrinkable wire big No. 15 AWG wire (1m)

36.00php .00php

Lead

55.00php

Bolt and nuts with washer

20.00php

Stand Total:

Equipment: Stationary winder Soldering iron with stand Cutter

55.00php/set

Supplier Deeco – (Liongco Electronics): 731-35 Gonzalo Puyat St. Quiapo, Manila Operator: Dee Hwa Liong Electronics Equipment Corporation

Scissors Splicer

Pakicheck nalang sa resibo menses mali mali yung mga price ko nasayo yung resibo hinuhulaan ko lang XD

Procedures (include diagrams and pictures)

1. Decide upon on what method is to be used to compute for the rated values that are given. 2. Compute for the area of the bobbin to know how many turns will be needed for the primary and secondary windings. It also determines the turns per volts ratio. 3. Determine the size, length and what type of wire will be used. 4. Know and prepare the materials that you will need in making a transformer 5. Wind the primary winding based on how many turns needed. Place insulation such as masking tape or fish paper after winding the wires for the second winding. 6. Next, wind the secondary winding depending on how many turns needed based on your calculations. You can wind it manually or use a rewinder to be more accurate in determining the number of turns in your transformer. Again, place a fish paper to cover the primary winding. 7. After winding we can now put the E I cores in the transformer.

8. Place the core alternately, the E core then the I core. Use a hammer to be able to force in the cores inside making it compressed and compact. 9. Secure the connection of the terminals to avoid sealing it inside the case. 10. Solder the terminals for easier connection outside the case. 11. Place shrinkable wire on the soldered part to insulate it 12. Mask the respective pairs of wires to determine the primary and secondary winding 13. Placing the cover 14. Use the bolts, nuts and washers to secure the core 15. Soldering fuse box on both primary and secondary side 16. Insulate the soldered parts using shrinkable wires 17. Test if the output of your transformer is correct. Then record the results.