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Simple Ultrasonic Sound Sensor Alarm Circuit using Opamp

This article discusses a simple ultrasonic sound sensor alarm circuit which may be appropriately set for detecting sound pressures well above the normal human listening capacity, that may range from 20 kHz and over. Ultrasonic Concept Ultrasound or ultrasonic sound waves was probably invented even before humans existed on this planet by a few of … Read moreSimple Ultrasonic Sound Sensor Alarm Circuit using Opamp

How to Protect Motor from Over Current using a Single Opamp

The post analyzes an automatic motor current overload controller circuit design. The idea was requested by Mr. Ali. Technical Specifications  I need some help to complete my project . This is a simple 12 volt motor that needs to be protected when it goes to overload. The data is shown and can help to design … Read moreHow to Protect Motor from Over Current using a Single Opamp

3-Phase Signal Generator Circuit using Opamp

Many a times we find it crucial and handy to possess a true three phase signal for evaluating many different electronic configurations such three phase inverters, three phase motors, converters etc. Since it’s not so easy to incorporate single phase to three phase conversion quickly we find this particular implementation difficult to acquire and enforce. … Read more3-Phase Signal Generator Circuit using Opamp

How to Use an Opamp as a Comparator Circuit

In this post we comprehensively learn how to use any opamp as a comparator in a circuit for comparing a input differentials and producing the corresponding outputs. What is an Opamp Comparator We’ve been using an opamp IC probably since we started learning electronics, I am referring to this wonderful little IC 741, through which … Read moreHow to Use an Opamp as a Comparator Circuit

Basic Op Amp Circuits Explained

The 8 fundamental 741 based opamp circuits presented here are not only interesting but also very amusing to build. The included circuit ideas like inverting and non-inverting amplifiers, tone control and regulated power supply will surely intrigue you. Circuit diagrams are also attached with the article.  Overview We all are probably aware regarding the high … Read moreBasic Op Amp Circuits Explained

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