Tda 154 1 The larger the coupling capacitance, the better. Generally, electrolytic capacitors can be Panasonic, and the pursuit of quality is not bad, rubies and black diamonds will do; The nonpolar filter capacitor adopts CBB capacitor. In principle, adding coupling capacitance can improve the enemy's voice, but there will be problems at high frequencies. The problem is relative. As long as you adjust the capacitance according to your own machine, the capacity will gradually increase. Audition adjustment one by one. Until you are satisfied. Also choose the electrodeless coupling capacitor of audio fever stage.

Coupling capacitance, also known as electric field coupling or electrostatic coupling, is a coupling mode due to the existence of distributed capacitance. Coupling capacitors isolate high voltage and weak current systems through capacitive coupling, provide high frequency signal paths, prevent power frequency current from entering weak current systems, and ensure personal safety. In addition to the above functions, the coupling capacitor with voltage extraction device can also extract power frequency voltage for protection and reclosing, and play the role of voltage transformer. There are many coupling methods.