This battery charger circuit is used to recharge the rechargable lithium battery. The circuit comes from Molicel. Charging is accomplished with a constant current of 60 mA for AA cells to a cutoff of 2.4V per […]
Category: Power Electronics
3A Switching Voltage Regulator based LM317HV
Above circuit diagram is a easy, simple and cheap switching voltage regulator which has capability to deliver adjustable voltage output range of 1.8V to 32V and static electric current of 3A. This regulator use adjustable regulator […]
6V and 12V Car Battery Charger
This 6V and 12V car battery charger circuit can be automatically charged, quickly and correctly, 6V and 12V batteries. Circuit design is divided into two series of modules that are: power supply module and the main […]
Power Supply Failure Alarm
This is the ‘special’ circuit design of power supply failure alarm. The vast majority of the power supply failure alarm / indicator circuits require a independent power supply for themselves. However the alarm circuit introduced right […]
6A / 0-28V Variable Power Supply
The following diagram is the schematic diagram of variable power supply which will deliver 0 to 28V output voltage at 6A or 8A electric current. Components List: R1 = 2K2 Ohm 2,5 Watt R2 = 240 […]
Battery Charger + Small LED Lamp based Solar Cell / Photovoltaic
This is the circuit diagram of rechargable battery charger which use solar cell / photovoltaic as the DC source. This circuit works to charge 3 types of rechargable batteries that are lead acid, Ni-Cd and Li-ion. […]
Electronic Appliance Protector
This is a easy built and very low-cost circuit purposed to protect your electronic appliances / devices, such as Personal Computer, TV, recording devices, refrigerator, and other devices during sudden tripping and resumption of home mains […]
Uninterruptible Power Supply with PIC17C43 Microcontroller
This is a MicroChip Uninterruptible Power Supply (UPS) reference design with PIC17C43 microcontroller. The document is available to download from the end of this post. At times, power from a wall socket is neither clean nor […]
12V Lead-Acid Battery Monitor
This easy circuit makes it possible to monitor the charging process to a higher level. Final adjustsments are simple and easy and the only device required is a digital voltmeter for the important accuracy and reliability. Connect an input voltage of 12.65 volt between the positive and negative poles and adjust the 10K trimmer potentiometer until Led 10 lights up.
Multi Output DC to DC Converter
This is the circuit diagram of DC to DC converter based LM2596, the circuit has a single input supply and multiple voltage outputs. The circuit has an input voltage range of 15V to 40V. It has […]