The following article explaining a dual battery changeover relay circuit was requested by Mr.Raja so that it could become possible to switch between his old and new inverter batteries automatically, eliminating manual interventions. Let’s read it in details. Technical Specifications “I bought a new 12v 110 Ah lead acid battery for the dc home lighting system. I had another 12v […]
Newly Updated Circuit Projects:
Making a Multi-function Water Level Controller Circuit
The following multi-function water level controller circuit post is based on the suggestions expressed by Mr. Usman. I have explained more about the requested modifications and the circuit details. The Circuit Suggestion: The concept of this circuit looks good. May I suggest a couple of other desirable features? 1) To protect the motor from potential overheating (or […]
Simplest AM Radio Circuit
The following circuit was taken from an old electronic book, it is indeed a very nice little two transistor radio receiver circuit which utilizes very few components yet is able to produce output over a loudspeaker and not just over headphones. Circuit Operation As can be seen in the given circuit diagram, the design is […]
Make this Musical Greeting Card Circuit
The presented circuit of a musical greeting card circuit was requested by one of the keen readers of this blog, so I designed this interesting little circuit, which is simple and easily gets embedded inside any standard greeting card fold. Looking at the given circuit diagram, we see a design consisting of a very few number of components, rigged […]
Designing a Grid-Tie Inverter Circuit
A grid tie inverter works quite like a conventional inverter, however the power output from such inverter is fed and tied with the AC mains from the utility grid supply. As long as the mains AC supply is present, the inverter contributes its power to the existing grid mains supply, and stops the process when […]
3 Simple Solar Panel/Mains Changeover Circuits
The discussed automatic change over relay circuit was requested by Mr.Karimulla Baig. The circuit normally charges the connected battery at constant current through the power received from the solar panel, and reverts to DC power from an AC/DC adapter in the absence of solar energy (during night time). Let’s the read the request in more details: Technical […]