coupling capacitor, also known as electric field coupling or electrostatic coupling, is a coupling method due to the existence of distributed capacitance. Coupling capacitors make the two systems of strong and weak currents coupled and isolated by capacitors, provide high-frequency signal paths, prevent low-frequency currents from entering the weak current system, and ensure personal safety. In [...]
paper capacitors use special capacitor paper as the medium, aluminum foil or tin foil as the electrode and wound into a cylindrical shape, then connect the lead, and then pass the staining treatment, and it is made of shell packaging or epoxy resin potting. Its structure is shown in the figure. Paper capacitors have the following [...]
The lifetime of photovoltaic inverter is determined by the reliability of its components. Electrolytic capacitors are one of the key components to improve the reliability of photovoltaic inverters. In addition, photovoltaic inverters have high expectations for life, so there are also requirements for capacitors. Photovoltaic inverter requirements for electrolytic capacitors 1. High voltage Generally, high-power photovoltaic [...]
Variable capacitors can be divided into air dielectric variable capacitor and solid dielectric variable capacitor according to their dielectric materials. 1. Air dielectric variable capacitor The electrode of the air dielectric variable capacitor is composed of two sets of metal sheets. Among the two sets of electrodes, the fixed set is the stator, and the rotatable [...]
In electronic equipment, the alternating current output from a device often has high-frequency components and low-frequency components. At this time, the high frequency bypass capacitor can filter high frequency (let the high frequency pass through the branch where the high frequency bypass capacitor is located) and retain the low frequency (low frequency output). The capacitor that [...]