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 [...]
The biggest feature of the self-healing shunt capacitor is its self-healing performance. When the dielectric breaks down, the short-circuit current will melt and evaporate the metal film around the breakdown site, thereby restoring the insulation, so it has a higher operational reliability. The self-healing time after dielectric breakdown is only a few microseconds. When the weak [...]
A fixed capacitance is a capacitor with a fixed capacitance. The deviation of the actual capacitance of the capacitor from the nominal capacitance is called the error, and the tolerance is called the accuracy.Selection method of fixed capacitor: (1) Choose the model reasonably according to the requirements of the circuit Generally used in low frequency coupling [...]
What is a SMD aluminum electrolytic capacitor? As well as liquid and solid SMD aluminum electrolytic capacitor, the cathode material is electrolyte, non-polar and polarized, this is also the most widely used capacitor we see. Liquid aluminum electrolytic capacitor 1 Standard product RVT series φ4*5.4, φ5*5.4, φ6.3*5.4, φ6.3*7.7, φ8*10.5, φ10*10.5 -55℃～+105℃ 2000 hours 6.3V~100V 0.47uf～1500uf GPS [...]