The time constant of any device, such as an RC circuit.

The key characteristics of such equations are explained in detail at RC circuits.

RC circuits can be used to filter a signal by blocking certain frequencies and passing others.

For example, suppose we put two of these RC circuits in series:

This is similar to the time constant (tau) within an RC circuit.

The parallel RC circuit is generally of less interest than the series circuit.

The simplest RC circuit is a capacitor and a resistor in series.

Compare this with the behaviour of the resistor output in an RC circuit, where the reverse is the case.

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

This equation is particularly relevant to first order systems such as RC circuits and damping systems.

The inverting input and the output of the comparator are linked by a series RC circuit.

An RC circuit serves to derive the second derivative, which is then amplified and digitized.

The simplest filter is a one-pole RC circuit.

This article considers the RC circuit, in both series and parallel forms, as shown in the diagrams below.

A simple first order network such as a RC circuit will have a roll-off of 20 dB/decade.

Note that the time constant of an RC circuit equals the product of the resistance and capacitance.

In particular, the feedback moves the real poles of an RC circuit in order to generate the proper filter characteristics.

Consider a simple RC circuit:

However, the slow negative feedback added to the trigger by the RC circuit causes the circuit to oscillate automatically.

Electrically this is a type of RC circuit (resistance-capacitance circuit), and its electrical properties are very simple.

For example, consider the following differential equation for the voltage across the capacitor in an RC circuit:

See Pole-zero plot and RC circuit.

EIM hinges on a simplified model of muscle tissue as an RC circuit.

When the transistor is cutoff, the output is similar to an RC circuit that exponentially decays to its final value.

For RC circuits, the characteristic time is the time the capacitor takes to discharge by 1/e (approximately 63%) of the way to the final voltage.