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  2. Decoupling capacitor - Wikipedia

    en.wikipedia.org/wiki/Decoupling_capacitor

    A decoupling capacitor provides a bypass path for transient currents, instead of flowing through the common impedance. [1] The decoupling capacitor works as the device’s local energy storage. The capacitor is placed between the power line and the ground to the circuit the current is to be provided.

  3. Decoupling (electronics) - Wikipedia

    en.wikipedia.org/wiki/Decoupling_(electronics)

    Another common example of the use of decoupling capacitors is across the emitter bias resistor of transistor common emitter amplifiers to prevent the resistor absorbing a portion of the AC output power of the amplifier. Lossy ferrite beads may also be used to isolate or 'island' sections of circuitry. These add a high series impedance (in ...

  4. Applications of capacitors - Wikipedia

    en.wikipedia.org/wiki/Applications_of_capacitors

    Ceramic X2Y decoupling capacitors. A decoupling capacitor is a capacitor used to decouple one part of a circuit from another. Noise caused by other circuit elements is shunted through the capacitor, reducing the effect they have on the rest of the circuit.

  5. Capacitive coupling - Wikipedia

    en.wikipedia.org/wiki/Capacitive_coupling

    Capacitive coupling decreases the low frequency gain of a system containing capacitively coupled units. Each coupling capacitor along with the input electrical impedance of the next stage forms a high-pass filter and the sequence of filters results in a cumulative filter with a cutoff frequency that may be higher than those of each individual ...

  6. DC block - Wikipedia

    en.wikipedia.org/wiki/DC_block

    DC blocks serve a wide range of practical functions, primarily in systems where undesired DC or audio currents can degrade performance. One of their key applications is in eliminating ground loops, which are common sources of hum and noise in audio and video systems.

  7. Capacitor types - Wikipedia

    en.wikipedia.org/wiki/Capacitor_types

    A capacitor can act as an AC resistor, coupling AC voltage and AC current between two points. Every AC current flow through a capacitor generates heat inside the capacitor body. These dissipation power loss is caused by and is the squared value of the effective (RMS) current

  8. Electrolytic capacitor - Wikipedia

    en.wikipedia.org/wiki/Electrolytic_capacitor

    In general, a capacitor is seen as a storage component for electric energy. But this is only one capacitor application. A capacitor can also act as an AC resistor. aluminium electrolytic capacitors in particular are often used as decoupling capacitors to filter or bypass undesired AC frequencies to ground or for capacitive coupling of audio AC ...

  9. Coupling (electronics) - Wikipedia

    en.wikipedia.org/wiki/Coupling_(electronics)

    In electronics, electric power and telecommunication, coupling is the transfer of electrical energy from one circuit to another, or between parts of a circuit. Coupling can be deliberate as part of the function of the circuit, or it may be undesirable, for instance due to coupling to stray fields.