RC Circuit - Parallel Circuit

Parallel Circuit

The parallel RC circuit is generally of less interest than the series circuit. This is largely because the output voltage is equal to the input voltage — as a result, this circuit does not act as a filter on the input signal unless fed by a current source.

With complex impedances:

I_R = \frac{V_{in}}{R}\,

and

I_C = j\omega C V_{in}\, .

This shows that the capacitor current is 90° out of phase with the resistor (and source) current. Alternatively, the governing differential equations may be used:

I_R = \frac{V_{in}}{R}

and

I_C = C\frac{dV_{in}}{dt} .

When fed by a current source, the transfer function of a parallel RC circuit is:

\frac{V_{out}}{I_{in}} = \frac{R}{1+sRC} .

Read more about this topic:  RC Circuit

Famous quotes containing the words parallel and/or circuit:

    “The beginnings of altruism can be seen in children as early as the age of two. How then can we be so concerned that they count by the age of three, read by four, and walk with their hands across the overhead parallel bars by five, and not be concerned that they act with kindness to others?”
    —Neil Kurshan (20th century)

    “each new victim treads unfalteringly
    The never altered circuit of his fate,
    Bringing twelve peers as witness
    Both to his starry rise and starry fall.”
    —Robert Graves (1895–1985)