In a classical electronic laboratory, there is an experiment where a diode is connected in a series with a resistor and a variable DC voltage source in order to draw the characteristic I-V curve of the diode. Input voltage is gradually increased starting from 0 V, and the potential difference between the diode’s terminals is read by using a voltmeter, and the current flowing through the diode is read by using an ammeter. When the forward voltage exceeds the PN junction’s internal barrier voltage (0.5-0.7 for a Si diode and 0.2-0.3V for a Ge diode), the current begins to pass through. After the internal barrier voltage of the diode, a small increase in the potential difference causes a large increase in the current. In this study, we will focus on a low-cost and easy method of drawing the diode I-V characteristic curve by using the Arduino Uno Board.

In this study, it is aimed to determine the effect of inquiry-based activities supported by computer simulations on the misconceptions of physics teacher candidates on photoelectric effect. Participants of the research constitute 28 teacher candidates who are registered in

Transistors are semiconductor devices that form the basis of today’s electronic technology. Following the first step of developing a point-contact transistor developed by Walter Brattain and John Bardeen in 1947, the development of the junction transistor by William Shockley in early 1948 opened the way for rapid progress in electronic technology. The processors of today’s computers or mobile phones can contain millions of transistors. For this reason, the way to understand how today’s technology works is to first understand the transistors that form the basis of these technologies. In this paper we describe an alternative way of determining transistor characteristics by using the Arduino.

The aim of this study was to determine students’ understanding of fundamental AC signal concepts, such as frequency, amplitude, and phase difference. The participants in the study were 179 students (44 female and 135 male) attending Izmir Vocational School who were enrolled in the Analog Electronics Course. The data of the study were collected by means of three open-ended questions and semi-structured interviews. In the questions, students were given a graph of an AC signal and asked to draw a signal with equal frequency but higher amplitude, a signal with equal amplitude but higher frequency, and a signal with a certain phase difference. The main aim of the interviews was to provide a deeper insight into the difficulties detected in the analysis of the questions. The data analysis showed that the students confused the concepts of frequency and amplitude and had difficulties in interpreting the signals that exhibited a phase difference.

The polarization of light is one of the best representations of the wave character of light, having a wide range of applications ranging from spectroscopy to sunglasses. The relationship between light intensity and the angle between the transmission axis of the polarizer and the analyzer can be explained by Malus' law. In this study, an experiment is presented that has been designed to prove Malus' law using simple tools. The experiment consists of a lightproof box having an analyzer, a polarizer, and an LDR, to create a dark environment, a microcontroller, the Arduino Nano, to collect data from the LDR and the Polarization of Light (PoL) application developed by the researchers to analyze and graph the collected data. In the experiment, a graph in which the light intensity depends on the angle is drawn in real time on a phone screen with an Android operating system. In the experiment, a graph of the light intensity depending on the angle is drawn in real time on a phone having an Android operating system. The experiment allows researchers and students to directly correlate the angle change between the analyzer and polarizer axes with the light intensity according to Malus' law.