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sinanissa
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Really, after I became an electrical (control) engineer, until now i do not know why capacitors like Electrolytic and Tantalum Ones, have polarity. can anybody answer me please?
Some capacitors have polarity because they are designed to work with direct current (DC) circuits, where the flow of electricity is in one direction. In these circuits, it is important for the capacitor to be able to store and release charge in a specific direction, which is achieved through polarity.
Polar capacitors have a positive and negative terminal, while non-polar capacitors do not have a designated positive or negative terminal. This is because non-polar capacitors are designed to work with alternating current (AC) circuits, where the flow of electricity constantly changes direction.
The polarity of a capacitor can usually be determined by the markings on the capacitor itself. The positive terminal is typically marked with a + sign, while the negative terminal may be marked with a - sign or a stripe. It is important to always check the markings before using a capacitor in a circuit.
It is not recommended to use a non-polar capacitor in place of a polar capacitor. Non-polar capacitors are not designed to handle the same voltage levels as polar capacitors, and using them in the wrong circuit can result in damage to the capacitor or other components.
If a polar capacitor is connected the wrong way in a circuit, it can cause the capacitor to fail and potentially damage other components in the circuit. It is important to always check the polarity of a capacitor before connecting it in a circuit.