Chem

A resistor-capacitor circuit (RC circuit) is an electric circuit composed of resistors and capacitors driven by a voltage or current source. Also, RC circuit is a combination of resistors and capacitors used to filters and timing circuits. In a simple RC circuit, there is a single resistor and a capacitor. The RC circuits, like other types of circuits, are used to filter a signal waveform, changing the relative amounts of low-frequency and high-frequency information in their output signals relative to their input signals. In timing circuits, the time for the voltage to rise in the capacitor of an RC circuit is determined by the value of the net resistance and capacitance.

Components of an electrical circuit can be connected in many different ways. However, the two simplest of these are called series and parallel. The components connected in series are connected along a single path, so the same current flows through all of the components. In a series circuit, the current through each of the components is the same and the voltage across the circuit is the sum of the voltages across each component. In parallel circuits is when a circuit comprises only a charged capacitor and a resistor, then the capacitor would discharge its energy into the resistor. This voltage across the capacitor over time could be found through Kirchhoff’s current law, where the current coming out of the capacitor must equal the current going through the resistor.

There are several types of RC filter circuits. Filters are frequency-selective circuits that may be low-pass, high-pass and even band-pass type. The parallel RC circuit is commonly used for low-pass filters that extract audio from higher-frequency components such as radio frequency carriers. RC circuits with the resistor in the output are usually the high-pass filters. As the frequency decreases, approaching zero cycles per second, the output of the high-pass filter decreases.

The RC circuit diagram may have a...