Diode detection in the circuit is realized according to its principle, the specific principle is as follows: in the detection circuit, the amplitude modulation signal is added to the positive electrode of the detection diode, and the working principle of the detection diode is basically the same as that of the rectifier diode in the rectifier circuit, and the amplitude of the signal is used to make the detection diode on. As can be seen from the amplitude modulation signal waveform, it is an AC signal, but the amplitude of the signal is changing.
It is generally believed that rectification and detection are not the same thing. In fact, strictly speaking, the detection effect of the diode is half-wave rectification. Rectification refers to the unification of the direction of the current, the most obvious example of application is the use of a rectifier circuit to convert alternating current into direct current.
The principle of the diode detection circuit is that when the signal passes through the diode, the capacitor will collect charge, and when the signal ends, the capacitor will discharge, resulting in a detection signal. Since the capacitor takes longer to discharge than to collect the charge, the detection signal will also last longer than the original signal.
2, industrial wireless remote control is specially used to control construction machineryOr a remote wireless remote control device for industrial equipment. It is mainly used in metallurgy, shipbuilding and container terminal, warehousing, machinery manufacturing, chemical industry, paper making, construction and construction machinery and other industries that use lifting machinery and make it remotely operated.
3, the principle of wireless remote control is that the transmitter first codes the control electrical signal, and then modulates, infrared modulation or wireless frequency modulation, amplitude modulation, converted into wireless signals sent out. The receiver receives the radio wave containing the information, amplifies, decodes, obtains the original control electrical signal, and then amplifies the power of this electrical signal to drive the related electrical components to achieve wirelessRemote control.
4, wireless remote control, this name is literal translation is no physical cable connection can control the TV artifact. It works by transmitting a wireless signal of a specific frequency to establish a wireless connection with a television device. However, this is not unlimited magic, the distance between the remote control and the TV will be affected by a number of factors, such as the transmission power and obstacles.
5, radio remote control is to communicate with the equipment through radio signals, no line of sight, can cover a wider range. Its transmitting and receiving parts coordinate work, so that we can remotely control all kinds of equipment, to achieve realPositive remote operation. The flexibility and variety of this remote control method broadens its range of applications in industrial and automation fields.
In the RE test process of EMC, these three values respectively represent the meaning of: average detection: its characteristics are the same number of detector charge and discharge, especially suitable for continuous wave measurement. Peak detectionWave: The number of charging intervals even if the narrow pulse can quickly charge the stable value. Quasi-peak detection: the number between the burst points of the geophone is between the average value and the peak value, and the transmission of the geophone during the measurement period is consistent with the pulse amplitude and the pulse repetition frequency.
What are the meanings of peak value, quasi-peak value and average value respectively in the RE test process of EMC? In the RE test process of EMC, these three values respectively represent the meaning of: average detection: its characteristics are the same number of detector charge and discharge, especially suitable for continuous wave measurement. Peak detection: charging interval number even narrow pulse can be fast charging stableBe worth.
First: peak value, quasi-peak value, average value meaning: the difference between the three is mainly concentrated with the difference in charge and discharge time of the detector average detection: its biggest feature is that the charge and discharge time constant of the detector is the same, especially suitable for the measurement of continuous wave.
A higher curve representing the peak detection, and a lower curve representing the mean detection. Electromagnetic compatibility (EMC) is a comprehensive evaluation of electronic products in the electromagnetic field interference size (EMI) and anti-interference ability (EMS), is one of the most important indicators of product quality, electromagnetic compatibility measurement by the test site andPublic charging pile.
At present, a large part of electric vehicles can be charged at home, charging at home is also known as slow charge, generally using 220V voltage can be directly charged, although the charging speed is relatively slow, but the battery system damage is relatively small, suitable for overnight charging. Most current electric vehicle charging can be done at home.
【 Pacific Auto network 】 Yes. At present, a large part of electric vehicles can be charged at home, home charging is also known as slow charging, generally using 220V voltage can be directly charged, although the charging speedIt is relatively slow, but the damage to the battery system is relatively small, and it is suitable for overnight charging, but it is necessary to pay attention to the safety of electricity when charging electric vehicles at home. In general, electric vehicles can be charged at home, which is a convenient, environmentally friendly and economical way to charge. With the continuous progress of technology, the charging speed of electric vehicles and the power of charging equipment are also increasing, which will further promote the popularity and promotion of electric vehicles.
Electric cars can be charged at home. The following is a relevant introduction to charging electric vehicles at home: Charging at home using voltage: Charging at home is also known as slow charging, oneGenerally, the use of 220V voltage can be directly charged, although the charging speed is relatively slow, but the damage to the battery system is relatively small, suitable for overnight charging, but you need to pay attention to power safety when charging electric vehicles at home.
At present, a large part of electric vehicles can be charged at home, charging at home is also known as slow charge, generally using 220V voltage can be directly charged, although the charging speed is relatively slow, but the damage to the battery system is relatively small, suitable for overnight charging, but at home when charging electric vehicles need to pay attention to electricity safety.