This article for Self Discharge Battery Protection Circuit teaches how to make one easy circuit to protect car battery (lead acid type) when not using. Also, this circuit help battery live more long time and keeps it healthy. WARNING: Making lead battery for car can be dangerous, so try to do this with one big […]
Power Supply Circuits
Battery Saver Circuit
Some things like calculator and TV remote have special circuit inside and this Battery Saver Circuit help to protect battery; also if someone forget to turn OFF the circuit, then it stops battery to finish fast. But still battery will lose power slowly with time even with this circuit. The Circuits Goal: After one minute […]
Dual Battery Charging Circuit
Did anybody’s device ever had no battery but have other batteries with just wrong size? then this post will show how to make a Dual Battery Charging Circuit. Also, it uses one power to charge two batteries and it uses one small chip called IC 555 and other small things to ensure both battery get […]
Adjustable Voltage, Current Power Supply Circuit using Transistor 2N3055
This Adjustable Voltage, Current Power Supply Circuit using Transistor 2N3055 talks about how to make simple and useful power circuit, as this circuit can change voltage and current so it can work for many electronic projects. Also, the circuit uses one popular transistor called 2N3055 and some other parts. WARNING: Be careful, High voltage can […]
220V Over Under Voltage Cut Off Circuit using Transistors
This 220V Over Under Voltage Cut Off Circuit using Transistors help to protect electric things from too high or too low voltage, it also uses two transistors and some easy parts. First, when voltage goes too much high or too much low then circuit cuts the power, also it is good for home use and […]
9V to 300V Converter Circuit
This smart design for 9V to 300V Converter Circuit changes a small 9V battery power into big 300V power; also it uses only one transistor which is very simple and easy for one to try. Also, this circuit is good for learning and for small projects. What is a 9V to 300V Converter: A circuit […]