A voltage comparator is a circuit which compares the voltages at its input terminals and switches the output to either high or low depending upon which input was high. making a voltage comparator using transistors and other components is quite difficult and makes no sense because we have OPAMPs. We can use 741, LM311, LM324, […]
Operational amplifier basics
Here you will learn about operational amplifier basics concept, how it works and it’s types. An operational amplifier is a DC-coupled high-gain electronic voltage amplifier that has high gain, differential input, high input resistance, and low output resistance.
It produces an output potential (without feedback) which is typically hundreds of thousands of times larger than the differential input voltage. That’s why it is mostly present in electronics circuits. Operational amplifiers are also called OP-AMP.
To understand operational amplifier’s working you must read about operational amplifier basics
There are two configurations for the operational amplifier
Voltage to current converter OPAMP circuit
Voltage to current converter is mostly used to transmit signals over a long distance to a control circuit. The most important reason behind it is that while traveling a long distance due to the internal resistance of the wire the voltage gets reduces. if there is a very small signal then it may get lost. […]
Current to Voltage Converter(I to V)
A current to voltage converter circuit produces output voltage with respect to input current. An I to V converter is used to convert varying current into equivalent output voltage. This circuit is very much useful when the measuring instrument can measure only voltages not the current and we want to measure the output current. The […]
Opamp as Differentiator (active differentiator)
A differentiator opamp is an opamp configuration that produces a differentiated version of the signal applied to its input terminal. This process is exactly the opposite of integration. by interchanging the positions of components in an integrator circuit we can get a differentiator circuit. Here we’re going to discuss two types of differentiator circuit: Ideal […]
OP AMP integrator
The circuit in which output voltage waveform is an integration of the input signal is called as an integrator or op-amp integrator or integrating amplifier. The output voltage is proportional to the amplitude and duration of the input signal. Ideal op amp Integrator Circuit: The above circuit is obtained by replacing the feedback […]
Voltage Follower OPAMP or buffer Amplifier
OPAMP buffer or voltage follower is an opamp configuration whose gain is equal unity. Voltage follower is also known as unity gain amplifier, voltage buffer, opamp buffer, or an isolation amplifier. It is used to separate two circuits having the same voltage level but different impedance. In a voltage follower circuit output voltage and input […]