An electronic filter is a circuit which passes some frequency components in the circuit and reject or attenuate all other frequency component. This curve shows an ideal low pass filter that passes the low frequency signal starting from 0 Hz to the cut off frequency. Any frequency component beyond the cut off frequency will be […]

LC Oscillating Circuit In the following AC circuit, after applying some voltage source, at time = 0 we remove this source and replace it with a short circuit. Both inductor and capacitor have to ability to story energy, inductors store energy in the form of magnetic field while the capacitor stores energy in the form […]

An voltage subtractor circuit is a circuit that produces an output voltage proportional to the voltage difference of two input signals applied to the inputs of the inverting and non-inverting terminals of an operational amplifier. We can first analyse the part of the circuit connected to the non-inverting input. It act as a potential divider, […]

An amplifier is a device that increases the strength of the input signal. An operational amplifier also known as Op Amp amplify the voltage. It is a three-terminal electronic device, having two input terminals, a inverting terminal marked by the “-” sign and a non-inverting terminal marked by the “+” sign. The third terminal is […]

Inductors are passive components that store energy through magnetic field. It creates a magnetic field when a current is passed through them. Inductance is the tendency of electrical conductor to oppose a change in electrical current flowing through it. The current flowing through the inductor cannot mutate because the inductor generates a electromotive force that […]

A capacitor is a device used to store electrical charge and electrical energy. The voltage at both ends of the capacitor cannot mutate because it takes time for capacitors to charge or discharge. The capacitance of the capacitor is defined as the ratio between the maximum charge that is abled to be stored on the capacitor to the […]

 A resistor is a passive component that limits or regulates the electric current in a circuit. The resistance is a measure of how difficult it is to pass current through a wire or component. It depends on the resistivity of the material.  Resistance is defined as the ratio of the voltage to the current. It is directly proportional to the length of the material and inversely proportional to the cross-sectional area of the material. […]

The photo diode is a semiconductor device which converts the incident light into electrical current. Their application includes optical communication system, television, remote control, etc. On this symbol, there is two arrow comming into the diode, it indicates that whenever the light falls on this diode, then it generate the photo current. Unlike the normal […]

Applications of LED: Advantages of LED LED LED is a P-N junction diode, whenever the current flows through it in the forward direction, it emits light of a particular color. This process of giving off light when applying electrical energy is known as electroluminance. When the diode is forward-biased, the holes in the P side […]