This circuit consists mainly of the following components: a solar cell, a DC pump, a 555 timer, and an LM311 comparator. It worked well and was also very efficient, requiring only power from the solar cell rather than a battery. Read more
A solar-powered water pump circuit for a place with no power outlet, with a battery. We’ll learn how to use a MOSFET instead of a relay, as well as the NE555 timer circuit. Read more
If we were to use a DC water pump without an AC outlet, most likely we would power it with a 12V lead-acid battery. It is quite convenient, although their life span will shorten drastically down to around two years. However, there are things that we can do to prevent this, which are also features … Read more
This is simple Solar plant watering alarm circuit. It will sound alarms when the soil is dry. The trees have died. It the solar sell is 6V DC power supply Read more
Let’s build an adjustable dual power supply circuit using a 7805 and a 7905 IC. The output can be adjusted from +5V to +25V and -5V to -25V at 1A. It is also a great way to understand the basics of OP-AMP circuits. Read more