The Utilization of Small Voltage Battery for Emergency Light using the "Joule Thief" CircuitThe Applied Electromagnetics ProjectElectromagnetics CourseDepartment of Nuclear Engineering and Engineering PhysicsUniversity of Gadjah Mada

Contributors

1. Abdurachman Mappuji (39124),2. Tiyana Firli (41422),3. Teguh Arya Pamungkas (41497),4. Anggit Kristianto (41554).

3 Background

Dari total 33 provinsi di Indonesia pada tahun 2008 hanya 14 provinsi yang memiliki rasio elektifikasi lebih dari 60% sedangkan sisanya 14 provinsi dengan rasio elektrifikasi 41% sampai 60% dan 5 provinsi memiliki rasio elektrifikasi 20 sampai 40%.

Walaupun menurut data Kementrian ESDM pada tahun 2013 rasio elektrifikasi di Indonesia sebesar 80,51% namun kesenjangan rasio elektrifikasi masih belum teratasi sepenuhnya.

Terbukti dengan pernyataan rektor UGM pada tahun 2015 bahwa kesenjangan rasio elektrifikasi perlu dikurangi.

4 Background (cont.)

5 Background (cont.)

6 Background (cont.)

7 Background (cont.)

8 Background (cont.)

9 Components Battery Resistor Transistor Superbright LED Toroid

Method

Image Source: [1] North Fulton Amateur Radio League, “Joule Thief – Detailed Construction.” [Online]. Available: http://www.nfarl.org/kits/jouleThief/Joule_Thief_Detailed_Construction.pdf.

+

-

Vin+

-

Vout

Number of LED: 8

11 Method (cont.)

Examining relations between voltage and time

Examining relations between voltage and relative light intensity

12 Results

13 Results

Date Time Time (minutes) Vin (V) Intensity

13/11/2015 08:32:00 PM 0.0 1.605 Very Bright

14/11/2015 06:25:00 PM 1313.0 1.329 Very Bright

15/11/2015 01:27:00 PM 2455.0 1.252 Very Bright

15/11/2015 05:35:00 PM 2703.0 1.231 Very Bright

15/11/2015 07:48:00 PM 2836.0 1.219 Very Bright

16/11/2015 03:33:00 PM 4021.0 1.03 Bright

17/11/2021 12:10:00 PM 5978.0 0.485 Dim

14 Demo / Video

DEMO

15 Conclusions

Emergency lamp that was designed capable to use in four days non stop.

Emergency lamp that was designed capable to use in low voltage power supply.