a. Direct Current Power Measurement Below is shown a picture of the wattmeter link for DC power measurement. Figure 48. The wattmeter linkage for DC power measurement Wattmeter is an instrument of electrical power meter which is a combination of voltmeter and ampermeter. Direct current power measurements can be made using the Wattmeter gauge. In this instrument there are two ...
Read More »Basic Theory Transformer
The transformer (transformer) is an electric appliance / electronics which serves to move the energy (power) power from input to output or from the primary side to the secondary side. The transfer of power from the primary to the secondary is accompanied by a voltage change either up or down. There are two types of step-up transformer that is transformer ...
Read More »Energy Converter Tool
Some of which we will discuss are the tools that convert electrical energy into other forms of energy. This is important given the amount of electricity consumption in the unit during operation, depending on how many devices are used, for example when the unit works at night with all the lights on and the air conditioner also works with the ...
Read More »Bias Transistors
As shown in Figure below, transistors have two junctions, one between the emitter and the base, called the Base Diodes – emitter, and the other between the collector and the base, called the Base Diodes – Collector. Since each diode has 2 possible bias, the bias Manu (forward biased) and bias backwards (reverse biased), the transistor has 4 (four) the ...
Read More »Prinsip Dasar Kerja Alternator
Gambar 1.13 mennunjukan bagaimana tegangan AC dihasilkan oleh induksi elektromagnetik. Pada gambar ini medan magnet berputar dan konduktor dibentuk menjadi gulungan. Saat konduktor pada posisi parallel dengan medan magnet, konduktor tidak terpotong oleh medan magnet manapun, pada putaran ini tidak menghasilkan arus dan tegangan sama sekali. Pada gambar 1.13 B, kita melihat medan magnet telah diputar 90º, menempatkannya pada sisi ...
Read More »Prinsip Kerja Alternator
Semakin canggih dan modern unit-unit alat berat maka akan membutuhkan arus listrik yang besar. Sistem pengisian (charging sistem) harus dapat memenuhi kebutuhan arus tersebut di bawah semua kondisi oprasi unit dan harus dapat mengisi dengan cepat baterai. Komponen utama dari sistem pengisian (charging sistem) adalah alternator dan pada kebanyakan unit alat berat modern dengan pengecualian jika hal itu terkait wiring ...
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