In this post I have explained 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 […]
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Knock Activated Door Security Intercom Circuit
In this post I have explained a simple knock activated door security alarm circuit which can be installed by anybody for identifying a guest or an intruder at the door. […]
Generator/UPS/Battery Relay Changeover Circuit
In this article I have explained a generator/UPS/Battery relay changeover circuit for implementing a customized optimization for a generator, UPS, battery power network, in order to enhance the operational efficiency […]
Simple 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, I have explained the details through the following […]
Opamp Hysteresis – Calculations and Design Considerations
In most automatic battery charger circuits in this blog you might have seen an opamp with a hysteresis feature included for some crucial function. In the following post I have […]
Single Phase Jet Pump Controller Circuit
In this post I have explained a simple single phase jet water pump controller circuit using magnetic reed switch level sensor, and a set/reset circuit. The idea was requested by […]
