Converter op amp

It is said to be floating because the load resistance is not connected to the ground. The analysis of the V-I converter circuit is shown in figure 2. Ground load voltage to current converter circuit as shown in figure 3. The input V i is applied as shown in figure 3.

The resistance R 1 connected to the inverting terminal of the op-amp is grounded. The load resistor R L is grounded in this V-I converter circuit. It is said to be grounded because the load resistance is connected to the ground. The analysis of the V-I converter circuit is shown in figure 4. Let the voltage of node Q is V 1. Let current I 1 and I 2 flows through the resistor R 1 and R 2 respectively.

Ground load voltage to current converter circuit 2 as shown in figure 5. The input V i is applied as shown in figure 5. This happens for all the cycles of the input waveform. The precision switch and the monostable multivibrator generate a pulse of a specific amplitude and period which is fed into the averaging network.

Hence we get a DC voltage at the output. This is the circuit diagram of frequency to voltage converter using LM This IC is basically a voltage to frequency converter but it can be used as a frequency to voltage converter.

Its applications also include A to D conversion and long term integration. In this circuit, lm is used to convert frequency into voltage. The voltage on the output is proportional to the frequency at the input.

It is an 8 pins IC. The source is connected to pin 8 and supplies 15V DC. Pins 3 and 4 are connected to ground. The input frequency is given at pin 6 and the output voltage is taken from pin 1. The input frequency is differentiated by using the resistor R7 and capacitor C3 and then the resultant pulse train goes to pin 6.

The timer circuit gets triggered by the built-in comparator circuit in the IC when the negative edge of the pulse train appears at pin 6. The current flowing out of pin 6 is proportional to the values of capacitor C1 and resistor R1 which are also known as the timing components and the input frequency. Therefore we get the output voltage across the resistor R4 which is proportional to the frequency of the input. The value of the resistor R3 is dependent upon the supply voltage. These converters are used in wide range of applications such as communication, power control, measurement and instrumentation systems etc.

A digital tachometer is an electronic device which measures the rate of rotation of a wheel. They display the rate of rotation in the form of voltage which is why a frequency to voltage converter is required in them. The diagram below shows a digital tachometer. The rate of occurrence of some events can be measured by a rate meter. So, the voltage at the inverting input terminal of the op-amp will be zero volts. We know that the ratio of output and input of a circuit is called as gain.

Megha Aggarwal. Ridhi Arora. Abhishek And Pukhraj. F Buscha. Converters Of Electrical Quantities Advertisements. Previous Page.

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