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Simple Frequency Counter Circuit Using a Single IC 4033

The circuit shown below can be used for measuring or counting frequency or Hz. The IC is very simple to make and utilizes just a single IC 4033 and a common cathode display as the main ingredients. Introduction If higher frequencies in the the order of two or three digits are required to be measured, then simple the number of … Read moreSimple Frequency Counter Circuit Using a Single IC 4033

How to Measure AC Milli-volts Using IC 741

In this article we study an opamp based circuit designed to measure AC millivolts accurately, let’s learn the details from the following explanation. The circuit shown below can be used to measure DC potentials in the range of milli-volts. The circuit is highly sensitive and is calibrated to measure voltages in the range of  1 … Read moreHow to Measure AC Milli-volts Using IC 741

Making a RTD Temperature Meter Circuit

In this post we learn the making of an RTD temperature meter circuit, and also learn about different RTDs and their working principles through formulas. What’s an RTD A RTD or resistance temperature detector works by detecting the difference or an increase in the resistance of the sensor metal when it’s subjected to heat. This … Read moreMaking a RTD Temperature Meter Circuit

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