Supriyanto, Amir
Faculty of Mathtmatics and Natural Sciences

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Perancangan Alat Ukur Kadar Gula Pada Produk Pangan Menggunakan Sensor Kapasitor Keping Sejajar Berbasis Mikrokontroler ATMega8535 Sanjaya, Hardaniyus; Supriyanto, Amir; Pauzi, Gurum Ahmad
Jurnal Teori dan Aplikasi Fisika Vol 5, No 1 (2017): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v5i1.1364

Abstract

It has been realizeda instrument measuring of sugar content using sensor chip capasitors parallel based on microcontroller ATMega8535. The research objective design and realize a detector sugar in food product. The design of study was conducted by placing the sensor chip capasitors parallel as input voltage, then the signal will be condition by the Wheatstone Bridge which will be forwarded to the microcontrollel ATMega8535 and displayed on the LCD. The result of measurements performed on the percentage of food product with sugar content of the flour by 4,77%, tapioca starch 33,33%, flour maizeaku 40,69%, tepung ketan putih 32,74%, tepung beras putih 36,96%, sagu 49,46% and beras merah 20,32%. The data were analyzed and obtained the standard deviation by the change of voltage
Analisis Kelistrikan Sel Volta Memanfaatkan Logam Bekas Yulianti, Devi; Supriyanto, Amir; Pauzi, Gurum Ahmad
Jurnal Teori dan Aplikasi Fisika Vol 5, No 1 (2017): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v5i1.1359

Abstract

It has been conducted a research to analyze the scrap metals as voltaic cells. The research objective was to utilize scrap metals as an alternative source of electrical energy and as a voltaic cell to the battery. The materials required consist of a electrode copper (Cu), iron (Fe), aluminum (Al) and zinc (Zn), solution of CuSO4.5H2O, solution of ZnSO4.7H2O, solution of Al2(SO4)3.7H2O, solution of FeSO4.8H2O, jelly powder, and salt NaCl. The electrode couple are Cu-Al, Cu-Fe, Cu-Zn, Al-Zn, and Fe-Zn. Volume variation are 20 ml, 25 ml, 30 ml, 35 ml, and 40 ml. Data of the voltage and current taken using a multimeter on each cell, without a load, with a load, and additional load. The results of the research were analyzed the value of power, current, and voltage with the greatest results in Cu-Zn electrode pair. The results are 14,949 mW, 3,05 mA, and 4,96 V.
Desain dan Realisasi Akumulator Elektrolit Air Laut Dengan Penambahan Sodium Bicarbonate (NaHCO3) Sebagai Sumber Energi Alternatif Arwaditha, Randha Kentama; Pauzi, Gurum Ahmad; Supriyanto, Amir
Jurnal Teori dan Aplikasi Fisika Vol 5, No 2 (2017): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v5i2.1809

Abstract

It has been done an instrument of generating electric power by using a series of Cu-Zn electrode with sea water electrolyte and with the addition of NaHCO3. The instrument was desined to charging and discharged sea water electrolyte that can be used as a sustainable alternative energy source. The first instrument with sea water electrolyte was tested in 78 hours with three times electrolyte charging every 24 hours.Voltage, Current, Power, and Illumination were generated by an instrument with sea water electrolyte, the longer used will be smaller and can only turn the LEDs of 1.2 watts for 3 days. While the sea water with electrolytes added NaHCO3, the longer used will be smaller too, and they can turn on the LED 1.2 watts to 5 days. Corrosion rate with the longer electrolytic sea water used will be higher, while the sea water with electrolytes added NaHCO3 no corrosion Occurs.
Desain dan Realisasi Akumulator Elektrolit Air Laut dengan Penambahan Sodium Bicarbonate (NaHCO3) sebagai Sumber Energi Alternatif Pauzi, Gurum Ahmad; Aewaditha, Randha Kentama; Supriyanto, Amir; Suciyati, Sri Wahyu; Surtono, Arif; Junaidi, Junaidi; Warsito, Warsito
Jurnal Fisika Vol 8, No 2 (2018)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jf.v8i2.16982

Abstract

Penelitian tentang karakteristik elektrik sel elektrokimia dengan elektrolit air laut dengan penambahan NaHCO3 menggunakan elektroda Cu-Zn telah dilakukan. Sistem elektrokimia ini dirancang agar dapat dilakukan penggantian elektrolit air laut tanpa membuat elektroda yang digunakan terpapar udara secara langsung. Pengukuran karakteristik elektrik  meliputi tegangan, arus, dan  daya, serta luminasi yang dihasilkan beban LED 1,2 watt. Penelitian ini melakukan perbandingan karakteristik elektrik sel elektrokimia dengan dan dengan tanpa penambahan NaHCO3. Pengukuran dilakukan selama 5 hari (120 jam) dengan penggantian elektrolit setiap 24 jam. Hasil penelitian menunjukkan bahwa sistem elektrokimia  dengan penambahan NaHCO3 mampu menyalakan LED lebih lama (5 hari) dibandingkan dengan tanpa penambahan NaHCO3 yang hanya mampu menyalakan LED selama 3 hari. Laju korosi pada elektroda Cu-Zn tanpa penambahan NaHCO3 semakin lama digunakan semakin besar, sedangkan dengan penambahan NaHCO3 tidak terjadi korosi.