Tantalum capacitors are widely used in audio circuits

With the application of tantalum capacitors in the market more and more, the number of models and the supply of tantalum capacitors increases, and the price decreases, many industries are now replacing aluminum electrolytic capacitors with tantalum capacitors. Of course, tantalum capacitors also have their own defects, it is not high enough pressure resistance, greatly restricting the use of tantalum capacitors. Take audio circuit as an example, audio circuit usually includes filter, coupling, bypass, frequency divider and other capacitors. How to use capacitors more effectively in the circuit has a greater impact on the improvement of audio quality. Tantalum capacitors are mostly used in the coupling capacitors of sound circuits.

The principle of tantalum capacitors is as follows: tantalum is easily oxidized in the air. People use its oxide film as the medium. Because tantalum is easily oxidized, tantalum capacitors have the repair function of "healing wounds" automatically. Because the oxide film is very thin, the tantalum capacitor is very close to the two plates, with few inductive reactance and very sensitive, so the charging and discharging speed is fast. These characteristics determine that tantalum capacitors are suitable for high frequency, low current and circuits requiring rapid response. Therefore, tantalum capacitors are also widely used in circuits requiring rapid response and high reliability such as missiles and satellites. Tantalum capacitors are also commonly used in audio circuits of advanced audio systems because they are very sensitive and can be charged and discharged quickly. They are mainly used in high audio circuits. Because they reduce the loss of small and weak current of high audio, they increase the high pitch relatively and improve the sound quality.