Contents
How does a capacitive voltage divider circuit work?
A capacitive voltage divider is a voltage divider circuit using capacitors as the voltage-dividing components. The common type of voltage divider circuit is one which uses resistors to allocate voltage to different parts of a circuit. This is shown below. Voltage is divided in a resistor network according to ohm’s law.
Can a voltage divider be built out of reactive components?
A voltage divider circuit can be built out of reactive components or even from fixed resistors. However, when comparing to capacitive voltage dividers, the resistive dividers remain unaffected with the change of frequency in supply. The purpose of this paper is to provide a detailed understanding of capacitive voltage dividers.
Which is more complex a resistive or capacitive voltage divider?
Just like resistors, capacitors placed in series with a voltage source form a voltage divider network. Capacitive networks, however, are a little more complex than plain resistive networks, because capacitors are reactive devices.
How is the voltage distributed between capacitors in a series connection?
Here the circuit voltage is 10V,this voltage is distributed between both capacitors. In the series connection all the capacitors have same charge (Q) on it but the supply voltage (V S) is not same for all capacitors. The circuit voltage is shared by the capacitors depending on the capacitance values of the capacitors.i.e. in the ratio of V = Q/C.
How is voltage divided between resistor and capacitor?
So the resistor in series with the greater resistance will receive the greater voltage. Capacitors, also, can form voltage divider circuits just like resistors so that voltage can be divided up to parts of a circuit depending on the value of the capacitor.
What happens when DC current is applied to a capacitor?
When DC current is applied to the capacitor, it charges fully. The dielectric material between the plates acts as insulator and also it opposes the current flow through the capacitor. This opposition to supply current through the capacitor is called reactance (X C) of a capacitor.