Photography flash units need correct timing. However, many old flash units do not have trigger input, so a Solar Cell Based Camera Flash Trigger Circuit is useful. This circuit is very simple as it uses very few components and also it does not need any battery. The circuit works using light only and when a […]
Solar Circuits
Automatic Solar LED Light Circuit
Solar power is free energy and it comes from the sun. It is clean and is renewable, because of this solar lights are very popular today. This is Automatic Solar LED Light Circuit and it turns ON light at night, and it turns OFF light at day automatically. In this circuit there is no switch […]
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 […]
Simple Solar USB Charging Circuit
We can charge phone or gadgets from sun with no wire and with no electricity bill. But this is possible only through solar power! This Simple Solar USB Charging Circuit help store sun energy in battery. Battery give power anytime. Only few parts needed: solar panel, diode, battery, USB module. Small and easy circuit which […]