This universal battery charger has regulated output voltage which can be adjusted as you need. Also, this circuit has an adjustable constant-current charging circuit. […]
Power Supply Circuits
Auto Switch-Off Power Supply (Variable Output 3.7V to 8.7V)
Here is the auto switch-off power supply which will turn off itself when there is no load on the output. The output voltage can […]
High Voltage, Low Current Power Supply (2000VDC from 15VDC)
This is a high voltage, low current power supply capable to deliver 2000VDC output from 15VDC input voltage. It uses the combination of simple […]
15V 1A Regulated Symmetrical Power Supply
This is the easy built 15V 1A regulated symmetrical power supply capable to deliver stabilized voltage of +15V DC and -15VDC. The maximum current […]
12V / 3A Regulated Power Supply
Here we provide a powerful 12V / 3A regulated power supply circuit. Of course the circuit provides a 12V regulated power supply with output […]
How To Repair Computer Power Supply
If the power supply is damaged or does not work, the computer also will not be able to work. Before starting to repair computer […]
Self Powered Battery Tester
This self powered battery tester circuit runs a fast battery test without the need of power supply or expensive moving-coil voltmeters. It features two […]
Versatile AA-Cell Battery Charger
This is the circuit design of AA-Cell battery charger that can be used to charge six AA batteries at once. An integrated circuit of […]