Preliminary Design of An Android-Based Voltage Divider Calculator to Support Extracurricular Program in Elementary School Sadam Fauzi, Syifaul Fuada*, Nadia Tiara Antik Sari, Titania Emaniar
Universitas Pendidikan Indonesia
Abstract
The voltage divider circuit is one form of many resistor configurations. The circuit is very simple: it is constructed by DC source (e.g., Battery, Power Supply) as voltage input (Vin) and at least two resistors (named as R1 & R2) connected in series, in which the midpoint of the connected-series resistors become an output. Although it is quite a simple circuit, for elementary students, finding voltage output (Vout) and determining a proper combination of R1 & R2 to get the expected Vout takes time. Calculation difficulties arise because of the R1 & R2 values cannot be chosen arbitrarily; it must be following the available commercially resistor. The calculation tool which is user-friendly, attractive, and simple is needed to facilitate the process of finding these variables. Based on literature studies, any paper that explicitly discusses the Android-based Voltage Divider Calculator has not been found. We also found that there is no result in finding the mentioned application on commercial Apps provider sites (such as Playstore, Appstore, and so on). This paper is a preliminary study in designing an Android-based Apps of the Voltage Divider Calculator. This paper only presents analysis and design steps. Hopefully, this application can later be employed as a complementary tool in an electronic extracurricular program at the elementary school level because most of the electronic material taught for elementary student contains the introduction of resistors and its applications accompanying with the mathematical expression of the resistor configurations.
Keywords: Android application, Elementary School, Elementary Student, Voltage Divider Calculator, Voltage Divider Circuit