solar nicad simple but useful circuit

Charger for all battery types power supply. This lithium battery charger circuit is dedicated to charging lithium batteries. It uses two chips: the voltage regulator LM317T and ICL7665, which warns microprocessors of overvoltage and undervoltage conditions. Charging is completed with...

micro power pulse generator

This circuit generates clean logic pulses with minimal current consumption. It is designed to produce short 2 ms pulses at a frequency of one pulse per second, drawing only 1 microamp from a 9-volt battery. The described circuit operates efficiently by...

Nicad Battery Charger

This simple charger uses a single transistor as a constant current source. The voltage across the pair of 1N4148 diodes biases the base of the BD140 medium power transistor. The base-emitter voltage of the transistor and the forward voltage drop...

Nicad Charger Uses Voltage Cut-Out

This circuit charges two NiCad cells with a constant current and features dual charging rates, voltage cutoff, and an audible alarm. The circuit is powered. This circuit is designed to efficiently charge two nickel-cadmium (NiCad) cells, utilizing a constant current method...

Nicad / NiMh Battery charger

Using this circuit will give good charging results to a sealed lead acid battery, like I use in the metal detector. This circuit is extremely small in size and has a low parts count, making it ideal in some situations....

12V / 4A Solar cell regulator

When the panel isn't generating, the entire circuit is off and there is absolutely no current drain from the battery. When the sun gets up and panel starts producing at least 10 Volt, the LED lights and the two small...

The D1 solar engine

The design is simple, tuneable, but no longer terribly useful. This design has a number of weaknesses; courtesy of Wilf Rigter, here are a few: The provided description indicates a circuit design that emphasizes simplicity and tunability, yet lacks practical utility...

Intelligent Solar Garden Light using an Arduino

A solar-powered garden light has been purchased, featuring a solar panel that charges batteries. When darkness falls, three LEDs illuminate until either light returns or the batteries deplete. The control box contains three Ni-MH AA batteries with a capacity of...

Solar Battery Charger Circuits

This is a simple and cost-effective solar battery charger that can be constructed by hobbyists. It has some limitations compared to other similar controllers, but it also provides several benefits. While primarily designed for charging lead-acid batteries, it can also...