Changing the dc sgnal to ac signal is done for te purpose of load regulations, such as motor speed, heater and lamp. Inverter work by rectification first then converted again a 1 phase signal. The output sinosoidal PWM (SPWM) type unipolar 220 volts from input 24 volt voltage. Unipolar SPWM generation microcontroller with programming. number counts (resolutions) period are set amount in ...

Tegangan yang tidak seimbang akan mempengaruhi stator, torsi dan kecepatan motor. Pada kondisi ini dapat menyebabkan kecelakaan pada motor induksi 3 fasa membuat mesin menjadi cepat panas, sehingga menurunkan produktivitas sebenarnya. Penyimpangan ketidakseimbangan tegangan menpengaruhi kinerja mengurangi kekuatan kemampuan tersebut. Definisi ketidakseimbang ditentukan berdasarkan metode NEMA (...

Selulosa bakteria (SB) adalah biopolimer yang penting kepada industri makanan kerana ciri uniknya seperti kapasiti pegangan air (WHC) dan kekuatan mekanikal tinggi. SB berpotensi untuk diinovasi dengan penambahan bahan pengawet bagi menyelesaikan masalah pencemaran oleh patogen. Strain Komagataeibacter xylinus mampu menghasilkan tinggi melalui proses fermentasi. Namun, ini melibatkan penggunaan...

Pico hydropower plant is a generator engaged in the field of renewable energy, general, power system uses 3-phase synchronous with AC voltage, its development it can be used as converter, by converting voltage to DC voltage. One so that battery charger or discharger. An AC-DC also known rectifier, device for alternating current (AC) direct (DC). In many technologies industrial world utilize con...

BACKGROUND Myocardial infarction (MI) is the leading cause of death in Iran. Every attempt to improve treatment patterns and patient outcomes needs a surveillance system to both consider the efficacy and safety measures. Fasa Registry on Myocardial Infarction (FaRMI) is the first population-based registry for acute MI in Iran targeted to provide meticulous description of patients' characteristi...

Volunteered Geographic Information (VGI) tools appear to enhance the possibilities offered by a collaborative approach to planning. The present paper analyzes both the results of experiences of the author and of those available in the literature, highlighting possible advantages and disadvantages. After a brief introduction to the meaning of e-democracy, the second part focuses on the role of I...