Unlike the resistor, which dissipates energy in the form of heat, ideal ultracapacitors do not loose its energy. We have also seen that the simplest form of a capacitor is two parallel conducting metal plates which are separated by an insulating material, such as air, mica, paper...
As we will see in this capacitor tutorial, Capacitors are energy storage devices which have the ability to store an electrical charge across its plates. Thus capacitors store energy as a result of their ability to store charge and an ideal capacitor would not loose its stored ene...
But just like resistive circuits, a capacitive voltage divider network is not affected by changes in the supply frequency even though they use capacitors, which are reactive elements, as each capacitor in the series chain is affected equally by changes in supply frequency. But b...
Capacitance in AC Circuits results in a time-dependent current which is shifted in phase by 90o with respect to the supply voltage producing an effect known as capacitive reactance. When capacitors are connected across a direct current DC supply voltage, their plates charge-up u...
With capacitors in series, the charging current ( iC ) flowing through the capacitors is THE SAME for all capacitors as it only has one path to follow. Then, Capacitors in Series all have the same current flowing through them as iT = i1 = i2 =&...
The voltage ( Vc ) connected across all the capacitors that are connected in parallel is THE SAME. Then, Capacitors in Parallel have a "common voltage" supply across them giving: VC1 = VC2 = VC3 = VAB = 12V In the following circuit the capa...
There are two common ways to know the capacitive value of a capacitor, by measuring it using a digital multimeter, or by reading the capacitor colour codes printed on it. These coloured bands represent the capacitance value as per the colour code including voltage rating and tole...
Capacitance is the measured value of the ability of a capacitor to store an electric charge. This capacitance value also depends on the dielectric constant of the dielectric material used to separate the two parallel plates. Capacitance is measured in units of the Farad (F), so n...
There are a bewildering array of capacitor characteristics and specifications associated with the humble capacitor and reading the information printed onto the body of a capacitor can sometimes be difficult to understand especially when colours or numeric codes are used. Each fa...
The types of capacitor available range from very small delicate trimming capacitors using in oscillator or radio circuits, up to large power metal-can type capacitors used in high voltage power correction and smoothing circuits. The comparisons between the the different types of...
