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ABSTRAK Photovoltaic (PV) merupakan alat yang digunakan untuk mengkonversi energi surya menjadi listrik dan dalam proses kerja PV diperlukan sistem solar charge controller untuk memaksimalkan kinerja pada PV. Penelitian ini membahas tentang sebuah sistem solar charge controller menggunakan maximum power point tracker dengan algoritmaperturb and observe (P&O) dan menggunakan buck converter yang…
ABSTRACT An experiment concerning the effect of watering moment and kind of media to the growth of Oncidium Golden Shower had been done at Jurangombo village, Magelang District, Central Java from October 1992 to December 1992, with an altitude of 378 metres above sea level. The purpose of this research is to know the effect of watering moment and kind of media to the growth Oncidium…
The experiment of the effect of TSP and KCl fertilizer dose on the growth seedling of sugar cane (Sacchorum offici- narum. L), was carried aut from Agustus untul October 1990 at Dumpoh, Potrobangsan Village, North Magelang district, Magelang city, Central Java, Regosol Soil, soil pH 6,5 on an altitude of 376 m. The method experiment used a Faktorial with design was arranged by Completely Ran…