Pure Sine Wave Solar Energy Inverter

FT series pure sine wave solar energy inverter 

  Usually, the AC voltmeter amplifies the tiny signal first, and then measures it as an input stage to minimize the influence of the measuring instrument on the circuit under test. At the same time, a circuit with high input impedance is used as the input stage to minimize the influence of the measuring instrument on the circuit under test. The AC voltmeter can be divided into amplification-detection type, detection-amplification type and heterodyne type according to the different structure of the circuit. The commonly used AC voltmeter belongs to the amplification-detection type electronic voltmeter. It is mainly composed of attenuator, AC voltage amplifier, detector and rectifier power supply. The voltage to be measured is first attenuated by the attenuator to a value suitable for the input of the AC amplifier, then amplified by the AC voltage amplifier, and finally detected by the detector to become DC flowing through the magnetoelectric meter, and the meter head indicates the magnitude of the measured voltage. The deflection angle of the pointer of the electronic voltmeter is proportional to the average value of the measured voltage, but the panel is scaled according to the RMS value of the sinusoidal AC voltage, so the electronic voltmeter can only be used to measure the RMS value of the sinusoidal AC voltage. When measuring non-sinusoidal AC voltage, the reading of the electronic voltmeter has no direct meaning. Only by dividing the reading by 1.11 (the form factor of sinusoidal AC voltage) can the average value of the measured voltage be obtained.

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