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  2. Miller effect - Wikipedia

    en.wikipedia.org/wiki/Miller_effect

    This example also assumes A v is frequency independent, but more generally there is frequency dependence of the amplifier contained implicitly in A v. Such frequency dependence of A v also makes the Miller capacitance frequency dependent, so interpretation of C M as a capacitance becomes more difficult.

  3. Capacitor types - Wikipedia

    en.wikipedia.org/wiki/Capacitor_types

    The self-discharge constant is an important parameter for the insulation of the dielectric between the electrodes of ceramic and film capacitors. For example, a capacitor can be used as the time-determining component for time relays or for storing a voltage value as in a sample and hold circuits or operational amplifiers.

  4. Capacitor - Wikipedia

    en.wikipedia.org/wiki/Capacitor

    A capacitor can possess spring-like qualities in an oscillator circuit. In the image example, a capacitor acts to influence the biasing voltage at the npn transistor's base. The resistance values of the voltage-divider resistors and the capacitance value of the capacitor together control the oscillatory frequency.

  5. Open-circuit time constant method - Wikipedia

    en.wikipedia.org/wiki/Open-circuit_time_constant...

    The linear term in jω in this transfer function can be derived by the following method, which is an application of the open-circuit time constant method to this example. Set the signal source to zero. Select capacitor C 2, replace it by a test voltage V X, and replace C 1 by an open circuit.

  6. RC circuit - Wikipedia

    en.wikipedia.org/wiki/RC_circuit

    A resistor–capacitor circuit (RC circuit), or RC filter or RC network, is an electric circuit composed of resistors and capacitors. It may be driven by a voltage or current source and these will produce different responses. A first order RC circuit is composed of one resistor and one capacitor and is the simplest type of RC circuit.

  7. Frequency-dependent negative resistor - Wikipedia

    en.wikipedia.org/wiki/Frequency-dependent...

    The electronic symbol for a frequency-dependent negative resistor. The symbol is intended to evoke a double capacitor. A frequency-dependent negative resistor (FDNR) is a circuit element that exhibits a purely real negative resistance −1/(ω 2 kC) that decreases in magnitude at a rate of −40 dB per decade.

  8. Varicap - Wikipedia

    en.wikipedia.org/wiki/Varicap

    This can be accomplished by placing a DC blocking capacitor with a capacitance about 100 times greater than the maximum capacitance of the varicap diode in series with it and by applying DC from a high impedance source to the node between the varicap cathode and the blocking capacitor as shown in the upper left circuit in the accompanying diagram.

  9. Frequency compensation - Wikipedia

    en.wikipedia.org/wiki/Frequency_compensation

    Another goal of frequency compensation is to control the step response of an amplifier circuit as shown in Figure 1. For example, if a step in voltage is input to a voltage amplifier, ideally a step in output voltage would occur. However, the output is not ideal because of the frequency response of the amplifier, and ringing occurs. Several ...