No abstract

<p><em>In this study, a supply voltage at peak breaker is made to do the plug discharge test. Plug discharge (capacitor residual voltage)  testing on IEC 60335-1 is a challenge for engineers. Requirement for the test are disconnecting supply voltage from the Equipment Under Testing (EUT) at its peak value. Most laboratory did this test manually, so the test might be carried out repeatedly so that the requirement is obtained. This system is using zero crossing detector and timer for detect the peak waave. The zero crossing detector circuit find the time when the voltage cross the 0 volt as the initial reference for termination. Microcontroller with Timer feature is used to delay the disconnection time from the 0 volt point or a quarter period of the power line. Relays are used as voltage breakers. From the experiments, it is necessary to add a compensation time due to the relay response time so that the system could do the supply voltage break at it’s peak wave. This system works properly with error 1.6% and with this means plug discharge testing could be finished in only one trial.</em></p>

Computer Vision (CV) is an interdisciplinary scientific field that discusses how computers can gain a high-level understanding of digital images or video. A system has been created that is capable of detecting a compact fluoresence lamp (CFL) light. However, in previous research there is no justification that the lamp is only a part that can glow on the lamp alone and has not been done in multi-lamp testing. This study aims to compare the lamp segmentation when it goes OFF and ON so that it could be justified the accuracy of this system and does multi-lamp testing. The method used is an experiment with collecting data by direct observation of the results of the system made. The system consists of a single board computer and a common webcam. The result is the difference between the lamp segmentation when it goes OFF and ON is small with the appropriate threshold setting. So that lamp light imaging had been made could function with good reability.

nomor 5 tahun 2019 tentang Persyaratan Teknis Alat dan/atau Perangkat Telekomunikasi Bergerak Seluler yang mewajibkan salah satunya untuk seluruh perangkat seluler yang beredar di Indonesia harus memenuhi persyaratan CISPR 32. Penelitian ini bertujuan untuk mengetahui gambaran awal sebaran charger perangkat seluler/ mobile phone charger yang memenuhi persyaratan pengujian CE sesuai CISPR 32 yang telah diwajibkan di Indonesia. Pengujian dilakukan berdasarkan standar CISPR 32 untuk conducted emmision (CE) terhadap ke 10 charger yang populer di pasaran. Pergantian hanya terjadi kepada kepala charger saja. Sebagai beban charger, digunakan sebuah mobile device dengan spesifikasi kapasitas baterai 4000 mAh. Dari hasil pengujian, dengan menerapkan nilai koreksi, didapat bahwa dari sepuluh charger yang diuji hanya terdapat empat charger yang memenuhi persyaratan pengujian CISPR 32.