Capacitor technical knowledge, principles and fundamentals
一, Film capacitor A film capacitor is a capacitor in which metal foil is used as an electrode, and plastic films such as polyethylene, polypropylene, polystyrene or polycarbonate are overlapped from both ends and then wound into a cylindrical structure. According to the type of plastic film, they are called polyethylene capacitors (also known as Mylar [...]
What is the bypass capacitor? A capacitor that bypasses the high-frequency component of an AC signal mixed with a high-frequency current and a low-frequency current is referred to as a "bypass capacitor." The main function of the bypass capacitor is to create an AC shunt that eliminates unwanted energy entering the susceptible region, ie when mixed [...]
The quality of electrolytic capacitor and solid capacitor (1) First, put the multimeter in the resistance file (2) Using the two test leads of the multimeter to contact the two ends of the electrolytic capacitor At this time, the pointer of the multimeter will be deflected clockwise to the right. When the pointer is deflected to [...]
1. 0805 ceramic capacitor The 0805 ceamic capacitor is a capacitor material. The chip capacitor is called: multi-layer (stacked, laminated) chip ceramic capacitor, also known as chip capacitor, chip capacity. There are two ways to represent the chip capacitor, one is expressed in inches and the other is expressed in millimeters. 0805 is the size of [...]
Monolithic capacitor is actually capacitors made up of multilayer ceramics, which have the characteristics of small volume and long life, and relatively high safety. Monolithic capacitor is widely used in electronic precision instruments. Various small electronic devices are used for resonance, coupling, filtering, and bypassing. The basic structure of a simple parallel plate capacitor consists of [...]