1) coupling. For example, the emitter of the transistor amplifier has a self-contained bias resistor, which at the same time makes the signal produce voltage drop back to the input and output signal coupling, which is the coupling component. If a capacitor is connected at the two ends of the resista

3) filtering. Theoretically (that is to say, the capacitance is assumed to be a pure capacitance), the larger the capacitance, the smaller the impedance and the higher the passing frequency. But in fact, most of the capacitors over 1F are electrolytic capacitors, which have a large inductance, so th

1) Bypass. By-pass capacitance is a kind of energy storage device which can provide energy for local devices. It can make the output of voltage stabilizer uniform and reduce the load requirement. Like small rechargeable batteries, bypass capacitors can be charged and discharge into the device. To mi

3. Equivalent shunt resistance EPR RL: the leakage resistance of a capacitor, as we call it, RL is an important parameter in AC coupling applications, storage applications (such as analog integrators and samplers) and when capacitors are used in high impedance circuits. The charge in ideal capacitor

The second part: the specific model and distribution parameters of capacitor should be applied correctly and reasonably, it is necessary to understand the specific model of capacitor and the significance and function of each distribution parameter in the model. Like other components, actual capacito

The first part：capacitors are classified in the high-speed PCB design of circuits according to application,which can be classified into four categories:Type I: ac coupled capacitors. It is mainly used for AC coupling of Ghz signal.Type II: decoupling capacitors. It is mainly used to filter the power