Chapter Iii Camilo Alcantara

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Chapter III DEVELOPMENT OF THE PROJECT

This chapter describes the supplies and materials needed for the completion of this project. It includes the list of all tools and equipment used in the construction of the Dual-Powered Working Table.

Supplies and Materials The quantity, unit, name and description of the supplies and materials used in the construction of this study are listed in Table 1. Table 1 List and Description of Supplies and Materials for The Dual- Powered Working Table Quantity 1 1 1 1 1 2 1 2 1 1 1 2

Unit kilo yard kilo liter bottle sheet Kg pc pc pc pc pc

Name and Description Putty, glazing Matt, rubber Nail, 1” finishing Paint, enamel chocolate brown Rubber cement, 355 mL Sand paper, wood Glue Plywood, 4’ x 8’ x .25’ Lamp, incandescent Lamp, table Catches, door Catches, barrel

13

Table 1 continued… 3 20 Inverter circuit 1 1 1 2 1 2 1 1 1 2 4 1 1 1 3 3 1 1 1 6 7 1 4 2 1 1 2 1 3 1 1 1 7 1 15

pc pc

Handles, cabinet Screws, wood

pc pc pc pc pc pc pc pc pr pc pc pc pc pc pc m pc pc pc pc pc pc pc pc pc pc pc pc pc pc pc pc pc pc m

Battery, Lead Acid Capacitor, 10µf 50V Capacitor, 100µf 400V Capacitor, 1000µf 25V electrolytic Capacitor, 2.2µf 50V Capacitor, 20J Capacitor,4.7µf 16V Capacitor, YIC EC 40000 MHz Clip, jumbo alligator black and red Diode, detector Diode, R560G Fuse, 1 Ampere 220V Holder, fuse 1 Ampere 220V IC, EM78P45APJ-6 IC, PC817 Lead, soldering 60 x 40 LED, 5 mm red LED, 5mm yellow Lamp, pilot 220V 5 Watts Resistor, 10Ω ½ Watt carbon Resistor, 1k Ω ½ Watt carbon Resistor, 1.8k Ω ½ Watt carbon Resistor, 10kΩ ½ Watt carbon Resistor, 2.2k Ω ½ Watt carbon Resistor, 27k Ω ½ Watt carbon Resistor, 3.3k Ω ½ Watt carbon Resistor, 33k Ω ½ Watt carbon Resistor, 330k Ω ½ Watt carbon Resistor, 4.7k Ω ½ Watt carbon Resistor, 510k Ω ½ Watt carbon Rheostat 100k Ω Tape, Electrical Transistor, Bipolar Junction C1815, NPN Transistor, L7805CV Bipolar Junction Wire, stranded AWG #16

14

Table 1 continued… 10 m Wire, stranded AWG # 20 1 pc Clad, 6”x 5” copper Variable Power Supply Circuit 1 pc Capacitor, 103M 25V 1 pc Capacitor, mica 1 f 50V 1 pc Capacitor, polarized, 2200 f 50V 1 pc Clad, 4”x 3”x 1/8” copper 4 pc Diode, rectifier IN4001 1 pc Fuse, 220V 1 Ampere 1 pc Holder, fuse 220V 1 Ampere 1 pc Iron, core 1” ½  1 pc Lamp, Pilot 220V 5 Ampere 1 pc Marker, Permanent 1 pc IC, LM350T regulator 1 pc Resistor, variable 50 k 1 pc Resistor, carbon 1.5k 2 Watt 1 pc Switch, Single pole Single Throw 1 pc Transformer, 220V-50V 3 A 2 m Wire, Magnetic AWG # 20 15 m Wire, stranded AWG #16 1 pc Plug, AC

Table 2 shows the tools and equipment and their corresponding functions in the construction of the project.

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Table 2 Tools and their Functions Tools Electric drill Screwdriver Claw hammer Soldering iron Long-nose pliers Side cutting pliers Crosscut saw Hack saw

Function drills and bores holes drives screws drives finishing nail solders parts and connections bends and holds wires, holds parts cuts wires and insulation cuts wooden parts cuts metals

Try-out and Revision The Dual-Powered Working Table after fabrication and assembly was subjected to determine its capability of performance as it was envisioned to operate.

Table 3 shows the defect found during the try-out and the revision made to remedy the defect of the Dual-Powered Working Table.

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Table 3 Defects Found and Revision Made In the Dual- Powered Working Table Defect Loose connection

Revision Tighten the loosen connection and reconnect firmly Checked the connection of the volt meter and connect if open Checked the fuse and replace a new one.

Volt meter doesn’t work No power Loose threads of cabinet handles Table lamp do not lit.

Replace a new one. Checked the connections and solder the open wire.

Construction Procedure 1. Planning and designing the prototype. 2. Prepare the working drawing/ diagram 3. Purchase the necessary supplies and materials needed. 4. Lay-out the desired measurement. 5. Cut wood base as to specific size 6. Locate the position of the other parts according to plan. 7. Assemble the needed parts to complete the device. 8. Test the effectiveness of the completed project. 9. Revise and remedy defects if any.

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Figure 2 depicts the flow of activities in constructing the gadget.

PD

T PU

A

M

T

R

E

Figure 2 Flow Chart of Work Activities

Construction Time Frame

Table 4 shows the activities and time allotment in constructing the project.

Table 4

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Activities and Time Allotment Work Activities 1. Planning/Designing 2. Purchasing 3. Measuring/ Cutting 4. Table Construction 5. Etching/ Drilling 6. Assembling/ Wiring 7. Testing/Try-out 8. Revising TOTAL

No. of Hours 7 hrs. 5 hrs. 5 hrs. 15 hrs. 2 hrs. 8 hrs. 2 hrs. 4 hrs. 48 hrs.

As shown in Table 4 the total number of hours to construct the activities is 48 hours.

Cost Table 5 shows the quantity, unit, name and description, and the cost of the supplies and materials used in the construction of the project. Table 5 Cost of Supplies and Materials for the Dual- Powered Working Table Quantity Unit 1 kilo 1 yard 1 kilo Table 5 continued… 1

liter

Name & Description Glazing patty Matt, rubber Nail, 1”

Unit Cost 120.00 150.00 30.00

Paint, enamel chocolate brown

110.00

Total Cost 120.00 150.00 30.00 110.00

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1

bottle

2 1 3 1 2 20 1 1 1 1 2

sheet pc pc pc pc pc pc pc pc pc pc

3 2 1 1

pc pc pc pc

1

pc

2 2 4 1 1

pc pc pc pc pc

1 3 3 1 1 6

pc pc m pc pc pc

7

pc

Rubber cement, 355 mL Sand paper, wood Lamp, table Handles, cabinet Catches, barrel Plywood, 4’ x 8’ x .25’ Screws, wood Battery, Lead Acid Capacitor, 10µf 50V Capacitor, 100µf 400V Capacitor, 103M 25V Capacitor, 1000µf 25V electrolytic Capacitor, 2.2µf 50V Capacitor, 20J Capacitor,4.7µf 16V Capacitor, YIC EC 40000 MHz Clad, 6”x 5” x 1/32”copper Clip, medium alligator Diode, detector Diode, R560G Fuse, 1 Ampere 220V Holder, fuse 1Ampere 220V IC, EM78P45APJ-6 IC, PC817 Lead, soldering 60 x 40 LED, 5 mm red LED, 5 mm yellow Resistor, 10Ω ½ Watt carbon Resistor, 1k Ω ½ Watt carbon

30.00

30.00

7.50 75.00 15.00 5.00 95.00 1.00 1,425.00 2.00 2.00 2.00 5.00

15.00 75.00 45.00 5.00 190.00 20.00 1,425.00 2.00 2.00 4.00 10.00

5.00 2.00 3.00 15.00

15.00 4.00 3.00 15.00

25.00

25.00

25.00 5.00 10.00 3.00 5.00

50.00 10.00 40.00 3.00 5.00

25.00 21.00 5.00 3.50 3.50 .5

25.00 63.00 15.00 3.50 3.50 3.00

.5

3.50

Table 5 continued… 1

pc

Resistor, 1.8k Ω½ Watt carbon

.5

.5

20

4

Resistor, 10kΩ½ Watt carbon 2 pc Resistor, 2.2k Ω½ Watt carbon 1 pc Resistor, 27k Ω½ Watt carbon 1 pc Resistor, 3.3k Ω½ Watt carbon 2 pc Resistor, 33k Ω½ Watt carbon 1 pc Resistor, 330k Ω½ Watt carbon 3 pc Resistor, 4.7k Ω½ Watt carbon 1 pc Resistor, 510k Ω½ Watt carbon 1 pk Solution, Ferric Chloride 1 pc Tape, electrical 7 pc Transistor, C1815 bipolar Junction,NPN 1 pc Transistor, L7805CV bipolar 1 pc Rheostat, 100k 15 m Wire, AWG #16 stranded 10 m Wire, AWG #20 stranded 1 pc Capacitor, mica 1 f 50V 1 pc Capacitor, polarized, 2200 f 50V 1 pc Clad, 4”x 3”x 1/8” copper 4 pc Diode, rectifier IN4001 1 pc Fuse, 220V 1 Ampere 1 pc Holder, fuse 220V 1 Ampere 1 pc Iron, core 1” ½  1 pc Lamp, Pilot 220V 5 A Table 5 continued… 1 1

pc

pc pc

Marker, Permanent IC, LM350T regulator

.5

2.00

.5

1.00

.5

.5

.5

.5

2

1.00

.5

.5

.5

1.50

.5

.5

21.00 10.00 10.00

21.00 10.00 70.00

10.00

10.00

20.00 9.00 3.00 1.00 5.00

20.00 135.00 30.00 1.00 5.00

25.00

25.00

8.00 3.00 5.00

32.00 3.00 5.00

20.00 21.00

20.00 21.00

25.00 75.00

25.00 75.00

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1

pc

1

pc

1

pc

1

pc

2

m

15 1

m pc

Resistor, variable 50 k 1 Watt Resistor, carbon 1.5k 2 Watts Switch, Single pole Single Throw Transformer, 220V-50V 3 A Wire, Magnetic AWG # 20 Wire, stranded AWG #16 Plug, AC

1.00

1.00

3.00

3.00

20.00

20.00

250.00

250.00

45.00

90.00

9.00 25.00 TOTAL

135.00 25.00 Php 3,637.00

As shown in Table 5 shows the total cost of the supplies and materials for the construction of the Dual-Powered Working table is Php 3,637.00

Table 6 presents the labor cost of the construction of the project

Table 6 Labor Cost

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Worker Carpenter Electrician

Rate/Day Php 275.00 Php 275.00

No. of Days 3 3 TOTAL

Cost Php 825.00 Php 825.00 Php 1,650.00

As presented in Table 6 the total cost of labor required in the construction of the device is Php 1,650.00.

Table 7 depicts the overhead and operation cost incurred in the development of the project. Table 7 Overhead and Operation Cost Particular 1. Overhead Cost 2. Operation Cost

Percentage 10% 15% TOTAL

Cost Php 363.70 Php 545.55 Php 909.25

As depicted in Table7 the overhead cost is Php 363.70 and the operation cost is Php 545.55 which is 10% and 15% of the cost of supplies and materials respectively, with a total of Php 954.25

Table 8 reflects the source of cost and the cost per source. Table 8

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Source of Cost and Cost per Source Source of Cost 1. Supplies and Materials 2. Labor 3. Overhead Cost 4. Operation Cost TOTAL

Cost per Source Php 3,637.00 Php 1,650.00 Php 363.70 Php 545.55 Php 6,196.25

As reflected in Table 8 the cost of the Dual-Powered Working Table is Php 6,196.25