This Simple IC L7660 Dual Power Generator Circuit makes dual power from single 5V input. It gives +5V and -5V output. It is useful for op amp circuits, analog circuits and small signal circuits. The design uses ICL7660 voltage converter IC. The circuit is simple and uses only two capacitors. Circuit Working: Parts List: Component […]
5V 3A Linear Power Supply Circuit
This 5V 3A Linear Power Supply Circuit is very simple for one to give it a try. It uses only LM323K IC and few more parts which are easily available. It gives 5V fixed output and can handle load up to 3A. Circuit Working: Parts List: Component Specification Quantity Capacitors Electrolytic 4700uF 25V, 470uF 25V […]
555 Pulse Generator Li-ion Battery Charger Circuit
Charging a Li-ion battery does not need big smart charger. But we can do it with one small 555 timer chip. This 555 Pulse Generator Li-ion Battery Charger Circuit makes fast little pulses that charge the cell gentle and safe. Anyone can build this circuit with very few parts and with very low cost. A […]
Low Cost 1.2V AA Ni-MH Solar Battery Charger Circuit
This project shows about a Low Cost 1.2V AA Ni-MH Solar Battery Charger Circuit. It works with small cheap solar panel as it charges the battery safely in sunlight. It uses only solar panel, diode, resistors and two transistors. And these parts are few which are easy to find. The circuit protects battery from too […]
Solar Water Pump Circuit using Battery and MOSFET
In my earlier article I showed about solar water pump circuit using relay. That design works, but relay makes clicking sound and relay contacts can burn after long use. So now here is the new version. This project is Solar Water Pump Circuit using Battery and MOSFET instead of relay. MOSFET has no moving parts, […]
Solar Water Pump Circuit using Battery and Relay
This project is about Solar Water Pump Circuit using Battery and Relay. It uses one 18V 20W solar panel, two small 12V batteries, one relay and diodes. The circuit can run a 12V DC water pump. Battery stores power from solar panel and relay controls when pump run. It is a very simple circuit and […]