In this article I have explained a simple low dropout LDO, or zero drop solar charger circuit without microcontroller which can be modified in many different ways as per user preference. The circuit does not depend on microcontroller and can be built even by a layman. What is a Zero Drop Charger A zero drop […]
Battery Charger Circuits
5 Best 6V 4Ah Automatic Battery Charger Circuits Using Relay and MOSFET
The following 5 versions of 6 volt 4 AH battery charger circuits has been designed by me and posted here in response to the request from Mr. Raja, I have explained the whole conversation. Technical Specifications “Dear sir, please post a circuit to charge 6 volt 3.5 ah lead acid battery from 12 volt battery. […]
How to Calculate Solar Panel, Inverter, Battery Parameters
In this post I have explained through calculations how to select and interface the solar panel, inverter and charger controller combinations correctly, for acquiring the most optimal results from the set up. Calculating Solar Panel, Inverter and Battery Charger Specifications For the sake of convenience, let’s believe you possess a a 100 watt appliance or […]
Low Battery Indicator Circuit Using Two Transistors Only
In the following post I have explained a simple low battery indicator circuit by using just two inexpensive NPN transistors. The main feature of this circuit is its very low stand by current consumption. The Circuit Concept We have so far seen how to make a low battery indicator circuits using a 741 IC and […]
Solar Water Heater Circuit with Battery Charger
The proposed solar water heater with battery charger controller circuit explains a simple method of utilizing the excess solar energy from a solar panel for heating water in water tanks or swimming pools or poultry egg chambers. Normally the circuit also functions like an automatic solar battery charger, and simultaneously powers domestic electrical appliances. Understanding Solar Charging […]
4 Simple Li-Ion Battery Charger Circuits – Using LM317, NE555, LM324
In this post I have explained a four simple yet a safe way of charging a Li-ion battery using ordinary ICs like LM317 and NE555 which can be easily constructed at home by any new hobbyist. Although Li-Ion batteries are vulnerable devices, these can be charged through simpler circuits if the charging rate does not […]