741 Comparator Circuit Design

This circuit works by exploiting the fact that an lm741 operational amplifier can function as a comparator.

741 comparator circuit design.

You will find both these units having an identical triangle shaped device symbol internally which we normally recognize and use for drawing comparator circuits. We can use signals with any format but the frequency response up to 1mhz. A non inverting 741 ic op amp comparator circuit is shown in the figure below. In this circuit i am using the 741 op amp as a comparator to compare two voltages.

Here we are discussing one of the simple application circuits of this ic where it is being configured as a comparator no surprise the following applications. That is where the input terminals are at virtually the same voltage level and its output stage is designed to produce a linear output voltage that is not saturated for long periods of time. In the recommended opamp comparator design where the ic 741 is being made use of as a comparator basically different voltage levels are utilized as the referring and comparaing guidelines by the ic. For more circuit videos check out my channel and feel free to subscribe.

Comparators are often used for example to check whether an input has reached some predetermined value. We ve been using an op amp ic probably since we started learning electronics i am referring to this wonderful little ic 741 through which virtually any comparator based circuit designing becomes feasible. The fixed reference voltage vref is give to the inverting terminal of the op amp. This circuit voltage power supply is 5v to 18v.

This circuit is an example of a buffer op amp circuit use ic number lm741 performs this function very well does not require any additional equipment. Although we can use operational amplifiers such as the 741 as a basic comparator circuit the problem with this is that op amps are only optimised for linear operation. And limit the maximum voltage level power supply circuit is about 18v. It is called a non inverting comparator circuit as the sinusoidal input signal vin is applied to the non inverting terminal.

An alternative layout to a light darksensor is seen below. What is an op amp comparator. A comparator circuit compares two voltages and outputs either a 1 the voltage at the plus side. Vdd in the illustration or a 0 the voltage at the negative side to indicate which is larger.