Wireless indoor and outdoor temperature, humidity and atmospheric pressure weather forecastProduct features:1. Typical working voltage: 3.0V2. LCD parameters: 1 / 3 bias, 1 / 8 duty; Driving voltage 4
2021-11-27 hongling 59
Why use red glue for patch processing?Patch processing adhesive is patch processing red glue, which is usually red (yellow or white). The adhesive such as hardener, pigment and solvent is evenly distr
2021-11-27 admin 77
Calculation of power on time in RC resistance capacitance power on reset circuit developed by Dongguan single chip microcomputerThis paper introduces a calculation method of RC circuit time.Wen shaouI
2021-11-27 admin 87
Main causes of PCBA processing solder joint failure:1. Poor component pins: plating, pollution, oxidation, coplanar;2. Poor PCB pad: coating, pollution, oxidation and warpage;3. Solder quality defects
2021-11-27 admin 127