enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. RC time constant - Wikipedia

    en.wikipedia.org/wiki/RC_time_constant

    It is the time required to charge the capacitor, through the resistor, from an initial charge voltage of zero to approximately 63.2% of the value of an applied DC voltage, or to discharge the capacitor through the same resistor to approximately 36.8% of its initial charge voltage.

  3. RC circuit - Wikipedia

    en.wikipedia.org/wiki/RC_circuit

    These equations are for calculating the voltage across the capacitor and resistor respectively while the capacitor is charging; for discharging, the equations are vice versa. These equations can be rewritten in terms of charge and current using the relationships C = ⁠ Q / V ⁠ and V = IR (see Ohm's law).

  4. Capacitor - Wikipedia

    en.wikipedia.org/wiki/Capacitor

    A simple resistor–capacitor circuit demonstrates charging of a capacitor. A series circuit containing only a resistor, a capacitor, a switch and a constant DC source of voltage V 0 is known as a charging circuit. [32]

  5. Capacitance - Wikipedia

    en.wikipedia.org/wiki/Capacitance

    Conduction current is related to moving charge carriers (electrons, holes, ions, etc.), while displacement current is caused by a time-varying electric field. Carrier transport is affected by electric fields and by a number of physical phenomena - such as carrier drift and diffusion, trapping, injection, contact-related effects, impact ...

  6. Inrush current - Wikipedia

    en.wikipedia.org/wiki/Inrush_current

    Instantaneous current declines to steady-state current as the capacitor reaches full charge. In the case of open circuit, the capacitor will be charged to the peak AC voltage (one cannot actually charge a capacitor with AC line power, so this refers to a varying but unidirectional voltage; e.g., the voltage output from a rectifier).

  7. RLC circuit - Wikipedia

    en.wikipedia.org/wiki/RLC_circuit

    In the same vein, a resistor in parallel with the capacitor in a series LC circuit can be used to represent a capacitor with a lossy dielectric. This configuration is shown in Figure 5. The resonant frequency (frequency at which the impedance has zero imaginary part) in this case is given by [22]

  8. Parasitic capacitance - Wikipedia

    en.wikipedia.org/wiki/Parasitic_capacitance

    They act like the plates of a capacitor, and store charge. Any change in the voltage across the coil requires extra current to charge and discharge their small capacitances. When the voltage changes only slowly, as in low-frequency circuits, the extra current is usually negligible, but when the voltage changes quickly the extra current is ...

  9. Switched capacitor - Wikipedia

    en.wikipedia.org/wiki/Switched_capacitor

    The following equivalent resistance calculation will show how during each switching cycle, this switched-capacitor circuit transfers an amount of charge from in to out such that it behaves according to a similar linear current–voltage relationship with = / ().