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When testing the quality of the ballast, first connect the circuit as shown in Figure 7-2, then use the multimeter AC voltage range to measure the voltage value of the ballast to determine the qualit...[Details]
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HP appears to be working on a new Windows Mixed Reality headset, the HP Reverb Omnicept Edition. Unveiled by ALumia, the device is a more advanced version of the HP Reverb G2, adding eye tracking and...[Details]
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Low-voltage electrical appliances with overload protection function are very important components in the power system. They can effectively protect electrical equipment and lines from damage caused...[Details]
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ControlNet and EtherNet/IP fieldbuses
The Type 2 fieldbus standard developed by ControlNet International (CI) consists of the following parts:
PhL and DLL: ControlNet;
AL：Control Net...[Details]
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According to a netizen's contribution to IT Home, Google announced that it will provide a one-year extended repair plan for Pixel 4 XL models with power failure, which will include models purcha...[Details]
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The photovoltaic inverter market has experienced several twists and turns in 2023. The high inventory in the European market has frustrated the performance of many photovoltaic inverter companies t...[Details]
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Recently, Mohamed Awad, Vice President of Arm IoT and Embedded Business Unit, introduced Arm's new methodology for the IoT field at the Arm DevSummit with the theme of "System-based Design". As we al...[Details]
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1. Overview
The transformer position transmitter is a device that can extract the tap position signal of the main transformer and convert it into a DC analog
output
correspondin...[Details]
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February 9, 2010
Today, I wanted to do a comparative test between RU190N08 and 2907 to test the efficiency of these two tubes at different output powers. So, I adjusted various test i...[Details]
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In industries such as petrochemicals, biopharmaceuticals, etc. that are often exposed to flammable and toxic gases, or in industries where flammable and toxic gases exist in pipeline equipment, porta...[Details]
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introduction
FPGAs, microprocessors, DS2482-100, and DS2480B are common 1-Wire master devices. 1-Wire/iButton? slave devices are manufactured by Maxim, and the typical operating voltage of t...[Details]
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On the evening of April 28, Goertek disclosed its 2021 semi-annual performance forecast and the first quarter report of 2021. It expects the net profit attributable to shareholders of the listed comp...[Details]
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According to Jiwei.com, Intel CEO Pat Gelsinger reportedly hopes to acquire other chip manufacturers in the process of industry consolidation, even though their main acquisition targets are planning ...[Details]
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Change the multimeter probe to an anti-breaking probe
The multimeter probe can easily break at the end of the pen.
The above disadvantages can be avoided by making a section ...[Details]
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热阻(thermal resistance)，是物体对热量传导的阻碍效果。热阻的单位为℃/W，即物体持续传热功率为1W时，导热路径两端的温差。led的热阻是指LED点亮后，热量传导稳定时，芯片表面每1W耗散，PN结点的温外与连线的支加或散热基板之间的温度差就是LED的热阻Rth。热阻值一般常用θ或是R表示，其中Tj为接面位置的温度，Tx为热传到某点位置的温度，P为匯入的发热功率。热阻大表示热...[Details]
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