How to Set IC 741 for Auto Cut-oFF

The post explains how to set or adjust an opamp 741 IC based battery charger circuit for implementing an automatic cut-off for the connected battery once it reaches the full-charge level. Since I have many such IC 741 battery charger circuits posted here, the instructions will be helpful for correctly setting up most of those … Read moreHow to Set IC 741 for Auto Cut-oFF

How to Make a Soil Moisture Tester Circuit with a Single IC 741

A very simple mud or soil moisture tester circuit can be built by using a single opamp and a few passive components, let’s learn the details through the following article. Circuit Objective After water and sunlight the earth or the soil is the next most important natural gift that this planet has provided us with, … Read moreHow to Make a Soil Moisture Tester Circuit with a Single IC 741

Single Opamp IC LM321 Datasheet – IC 741 Equivalent

The IC LM321 is the single opamp version of LM 324 which is a quad opamp IC and carries 4 of these ICs in one package. Therefore for applications which demand a single opamp with the attributes of the versatile LM324, in such cases this single opamp can be utilized effectively. For more info, you … Read moreSingle Opamp IC LM321 Datasheet – IC 741 Equivalent

Simple IC741 based Low Battery Indicator Circuit

The proposed circuit was requested by one of the avid readers of my blog. It is a low battery warning indicator circuit using opamp 741 and can be used for monitoring a particular low battery voltage threshold. Circuit Operation The circuit may be understood with the following points: 1) The entire configuration is wired around … Read moreSimple IC741 based Low Battery Indicator Circuit

Simple Bedroom Lamp Timer Circuit Using IC 741

A simple automatic bedroom lamp timer circuit has been described here to switch off your bedroom lamp after a fixed predetermined time. The use of the reliable 741 IC makes the circuit very easy to build and moreover very accurate. Introduction The circuit of an automatic bedroom lamp timer presented here is super easy to … Read moreSimple Bedroom Lamp Timer Circuit Using IC 741

IC 741 Opamp Design Projects

The simple 741 opamp circuit design ideas presented here are not only interesting but also very amusing to build. The included circuit ideas using IC 741 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 … Read moreIC 741 Opamp Design Projects