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When measuring a device under test (DUT) with a network analyzer, what is the uncertainty in the impedance and return loss (S11) measurements if the input impedance is approximately 3 ohms (at 2 MHz)...[Details]
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Sina Digital News, March 19th afternoon news, the annual World Sleep Day (March 19th) is coming, have you started to pay attention to your sleep quality? Taking this opportunity, we would like...[Details]
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The 89C51 chip does not have its own PWM generator. If you want to use 51 to generate PWM waves, you must use software programming to simulate it. Methods can be roughly divided into two methods: sof...[Details]
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The implementation steps of the de-jittering filter method are as follows: set a filter counter, compare each sampling value with the current effective value, and if the sampling value is equal to th...[Details]
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PWM Motor/Light Controller Circuit-PWM Motor/Light Controller
A pulse width modulator (PWM) is a device that may be used as an efficient light dimmer or DC motor speed controller. The circuit ...[Details]
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1 Research and development overview
Figure 1 Circuit structure of hybrid compensation device
In the parallel hybrid compensation device, the main circuit of the ...[Details]
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Although major automotive chip manufacturers are implementing varying degrees of expansion, in the short term, the chip supply shortage problem is difficult to solve quickly. Some industry insiders e...[Details]
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Every year, 1.3 million people are killed in traffic accidents around the world, or more than 3,500 people per day. As statistics from the World Health Organization show (Figure 1), the types of acc...[Details]
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According to Linyang Energy's official account, Jiangsu Linyang Energy Co., Ltd. (Linyang Energy for short) and Huawei Digital Energy Technology Co., Ltd. recently signed a strategic cooperation fram...[Details]
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A commercially available ADSL data voice separator (connects to a computer and a telephone at the same time. It can make a call and surf the Internet at the same time), priced at 6.8 yuan. When taken...[Details]
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1 System Overview
The programmable current source has the characteristics of wide output current range, high accuracy and high power. It is an essential instrument for forming automatic test system...[Details]
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Virtual reality head mounted displays are the most popular digital devices at present. Oculus Rift is already on the market, HTC Vive is about to be shipped, and Sony Playstation VR will also be ...[Details]
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Positioning platform company TomTom (TOM2), Bosch and Daimler announced that they have jointly developed an advanced driver assistance system (ADAS) or intelligent cruise control system - Daimler Pre...[Details]
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In 2019, State Grid Ningxia Electric Power Co., Ltd. started construction of 110 kV and above power grid projects with a total length of 545.32 kilometers and 2.543 million kilovolt-amperes, and pu...[Details]
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GSM is a common VOIP voice codec library, which is implemented in Linux using libgsm. The libgsm library is needed in the project. So try to compile the GSM library directly. The official website h...[Details]
Analog electronics
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