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1. Filter capacitor is connected between the positive and negative poles of the DC power supply to filter out unnecessary AC components in the DC power supply and smooth the DC power. Generally, large-capacity electrolytic capacitors are often used, and other types of small-capacity capacitors can also be connected in parallel in the circuit to filter out high-frequency alternating current.
2. The decoupling capacitor is connected in parallel between the positive and negative poles of the power supply of the amplifier circuit to prevent parasitic oscillation caused by positive feedback formed by the internal resistance of the power supply.
3． In AC and DC signal circuits, the bypass capacitor is connected in parallel to both ends of the resistor or connected to the common potential from a certain point of the circuit to set a path for the AC signal or pulse signal to prevent the AC signal components from passing through the resistor. Produces pressure drop attenuation.
4. Coupling capacitors are used in AC signal processing circuits to connect signal sources and signal processing circuits or to connect between stages of two amplifiers. They are used to cut off DC and allow AC signals or pulse signals to pass through, thereby increasing the DC operating point of the front and rear stage amplifier circuits. Do not affect each other.
5. The tuning capacitor is connected to both ends of the oscillation coil of the resonant circuit and plays the role of selecting the oscillation frequency.
6. Pad capacitor is an auxiliary capacitor connected in series with the main capacitor of the resonant circuit. Adjusting it can make the frequency range of the oscillation signal smaller and significantly increase the oscillation frequency at the low-frequency end. Appropriate selection of the pad capacitor's capacity can raise the low-end frequency curve upward to approach the ideal frequency tracking curve.
In AC and DC signal circuits, the bypass capacitor is connected in parallel to both ends of the resistor or connected to the common potential from a certain point of the circuit to set a path for the AC signal or pulse signal to prevent the AC signal components from passing through the resistor. Produces pressure drop attenuation.
2. The decoupling capacitor is connected in parallel between the positive and negative poles of the power supply of the amplifier circuit to prevent parasitic oscillation caused by positive feedback formed by the internal resistance of the power supply.
3． In AC and DC signal circuits, the bypass capacitor is connected in parallel to both ends of the resistor or connected to the common potential from a certain point of the circuit to set a path for the AC signal or pulse signal to prevent the AC signal components from passing through the resistor. Produces pressure drop attenuation.
4. Coupling capacitors are used in AC signal processing circuits to connect signal sources and signal processing circuits or to connect between stages of two amplifiers. They are used to cut off DC and allow AC signals or pulse signals to pass through, thereby increasing the DC operating point of the front and rear stage amplifier circuits. Do not affect each other.
5. The tuning capacitor is connected to both ends of the oscillation coil of the resonant circuit and plays the role of selecting the oscillation frequency.
6. Pad capacitor is an auxiliary capacitor connected in series with the main capacitor of the resonant circuit. Adjusting it can make the frequency range of the oscillation signal smaller and significantly increase the oscillation frequency at the low-frequency end. Appropriate selection of the pad capacitor's capacity can raise the low-end frequency curve upward to approach the ideal frequency tracking curve.
In AC and DC signal circuits, the bypass capacitor is connected in parallel to both ends of the resistor or connected to the common potential from a certain point of the circuit to set a path for the AC signal or pulse signal to prevent the AC signal components from passing through the resistor. Produces pressure drop attenuation.
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