The comparator is a circuit that can compare the input voltage. The comparator usually uses Op-Amp as the primary device in the circuit. Vref is connected to + V supply, then R1 and R2 are used as voltage dividers, so the voltage value referenced to the + op-amp input is: V = [R1 / R1 + R2)] Vsupply The op-amp ...
Read More »Materi Dasar FLIP-FLOP
Adalah suatu rangkaian yang dapat menyimpan state biner (sepanjang masih terdapat power pada rangkaian) sampai terjadi perubahan pada sinyal inputnya rangkaian dasar flip-flop. Flip-flop dapat dibuat dari dua buah gerbang NAND atau NOR berikut ini: A. RS Flip-Flop Dengan Clock Dengan menambah beberapa gerbang pada bagian input rangkaian dasar, flip-flop tersebut hanya dapat merespon input selama terdapat clock pulsa. Output ...
Read More »Basic Meter PPMC
D’Arsonval meter base system uses permanent magnets and coils round. Therefore meters D’Arsonval commonly referred to as a Permanent Magnet Moving Coil (PMMC). Shown in Figure 5.6. D’Arsonval needle movement system requires very low power and a small current to the deviation needle on a full scale. Figure 6.7 Schematic picture PPMC meter (D’Arsonval) The equation for the torque that ...
Read More »Direct and Indirect Measurement
In practice, the measurement of electrical quantities for commercial purposes, for example to measure consumption of electrical energy that has been used by the consumer (kWh-meter or kVAr-meter) can be done in two ways, namely direct measurement and indirect measurement. Measurement is directly applied to the installation of small-scale low-voltage electricity. In this case the measuring devices used directly connected ...
Read More »The Direction of Movement Electrons
Electric current opposite to the direction of flow of electrons. If the flow of electrons from the negative pole to the positive pole, the electric current from the point of positively charged toward the negative point. Because the move is an electron while the proton trtap. Turns of any material each having electron content yan is not the same, the ...
Read More »Jembatan Wheatstone
Pengembangan rangkaian resistor seri dan paralelmenghasilkan prinsip Jembatan Wheatstone. Sumber tegangan DC mencatu rangkaian empatbuah resistor. R1 seri dengan R2, dan R3 seri dengan R4.Hukum Kirchoff tegangan menyatakan jumlah drop tegangan sama dengan tegangan sumber. Gambar 8.10 Jembatan Wheatstone Titik A-B dipasang Voltmeter mengukur beda tegangan, jika meter menunjukkan nol,artinya tegangan U1 = U3 disebut kondisi seimbang. Jika U1 ≠ ...
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