Car audio capacitors refer to electrolytic capacitors used in car audio auxiliary circuits. Advanced car audio CD players, DVD players and advanced power amplifiers are ancillary components that improve the quality of audio reproduction. Let me share with you the basic knowledge of car audio capacitors.
The role of car audio, car instrument, and car gauge capacitors in the circuit is:
1. Filtering: Filter out various noises in the power supply. The capacitor has the characteristic that the voltage across the electrodes cannot change suddenly, so the noise wave of the power supply device is absorbed by the capacitor and suppresses the circuit before the power circuit enters the main body of the car audio and power amplifier. crystal oscillator
2. Signal coupling in the circuit: The basic function of the capacitor is not to pass: it does not let the tributary pass, only the alternating current. The audio signal flowing through the car audio host and power amplifier is an AC signal within a certain frequency range. The AC signal must form a circuit to pass through and expand. In order to develop a bias voltage in a transistor circuit, a resistor is required to configure the amplifier circuit. The use of resistors is a necessary condition for configuring the amplifier circuit, but it also has a negative impact on the AC signal path. In other words, it affects the passage of audio signals to a certain extent. The function of the automotive capacitor is to smooth the AC path of the loop without changing the DC parameters of the loop. In other words, even very weak signals in the audio signal can be amplified. Sound quality is also improved due to low signal loss. Wirewound inductor
3. Energy storage: The energy storage function of the vehicle-mounted voltage stabilizing capacitor is also a characteristic of the capacitor's double-terminal voltage that cannot mutate. When the power amplifier outputs high-power energy, due to its energy storage effect, the dynamic characteristics of fast response are used to quickly replenish sufficient energy to the power amplifier circuit, reduce the instantaneous power voltage drop, and create the required working conditions for the power amplifier. The amplifier works normally.
The actual functions of car audio car standard capacitors are:
1. It can reduce the noise caused by poor power supply of the machine head and power amplifier. Chip resistor
2. When playing large dynamic program sources, reduce the nonlinear distortion of the amplifier caused by sudden voltage drops.
3. In an excellent car audio system, the signal loss of the circuit is small.
