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USB Battery Charger For Lithium Ion battery with the LM3622 is a series of lithium ion battery charger. This charger circuit operates using power from the USB source PC. Current consumption of a series of USB Battery Charger For Lithium Ion battery with 400mA LM3622 is limited by R1, so it does not exceed the current maximum limit that can be given by a USB computer. Brains from USB Battery Charger For Lithium Ion battery with IC LM3622 , it is a national of having special technical specification charger for lithium ion batteries. In a series of USB Battery Charger For Lithium Ion with LM3622 R1 0.25 Ohm value that serves to limit the charging current 400mA to the battery. Q2 and Q1 is the last part of the USB Battery Charger For Lithium Ion battery with the LM3622. In principle, USB Battery Charger For Lithium Ion with LM3622 identify the condition of the battery full charged battery voltage via pin 6 LM3622. USB Series Lithium Ion Battery Charger For LM3622 is equipped with a switch ...

This is a circuit solar charger via USB cable emergency , it is an alternative circuit that uses solar cell and LM317 to regulate and make a recharge via USB for electronic equipment that can be IPODs , cell phones , MP3 , tablets , etc. .   The simplicity of the circuit can be noted that he does not have much appeal, but it's enough to make a simple battery charge . The Solar Cell should be 12v current should be enough for loading , 10 % of the batteries .   Battery Charger Circuit using Solar Cell Circuit Diagram

This universal battery charger is based on LM317 and has an adjustable regulated output voltage and also has an adjustable constant-current charging circuit that makes it suitable to use for charging most NiCad batteries and some other types of batteries . This LM317 universal battery charger can charge a single cell or a number of series-connected cells up to a maximum voltage of 18 V. This universal battery charger circuit use just some common electronic components like LM317 regulator , operational amplifier and some 2n3055 power transistors .2n3055 power transistors Q1 and Q2 are connected as series regulators to control the battery charger's out¬put voltage and charge-current rate. The LM317 used as an adjustable voltage regulator supplies the drive signal to the bases of power transistors Q1 and Q2. By turning the potentiometer R9 the output-voltage level will be modified. A current-sampling resistor, R8 (a 0.1-fi, 5-W unit), connected between the negative output lead and cir...

The project produces a battery charger that may be used to charge NiMH, Li-Ion, NiCad, sealed lead acid, and rechargeable alkaline batteries. There are two channels that the charger imposes which can charge two different batteries at a time at up to 2A each while channel A can be used as a discharger alternatively. All necessary parameters are allowed to be set by a 2x16 LCD display with a 5-key keypad while displaying charging/discharging values including mAH when complete. A fixed voltage, current limited output, fixed current, voltage limited output, and a variable PWM output are provided as a bonus. The brain of the circuit is performed by an ATmega32 microcontroller that runs at 16MHz. In the charging circuit, the inductor/capacitor pair are optimized for a 16kHz pulse width modulated signal and provide and provide a smooth DC output. The raw signal is compensated in software for the drop across the current measurement resistor and lead wires while and the voltage input needs to b...

Except for use as a normal Battery Charger , this circuit is perfect to 'constant-charge' a 12-Volt Lead-Acid Battery , like the one in your flight box, and keep it in optimum charged condition. This circuit is not recommended for GEL-TYPE batteries since it draws to much current. The above circuit is a precision voltage source, and contains a temperature sensor with a negative temperature coλficient. Meaning, whenever the surrounding or battery temperature increases the voltage will automatically decrease. Temperature coλficient for this circuit is -8mV per °Celcius. A normal transistor (Q1) is used as a temperature sensor. This Battery Charger is centered around the LM350 integrated, 3-amp, adjustable stabilizer IC. Output voltage can be adjusted with P1 between 13.5 and 14.5 volt. T2 was added to prevent battery discharge via R1 if no power present. P1 can adjust the output voltage between 13.5 and 14.5 volts. R4's value can be adjusted to accommodate a bit larger or s...

Battery Charger in general can be interpreted as a means to recharge the battery charge. Principles of good charger circuit is capable of providing resources to perform effectively charging the battery, efficient and safe. AVR-Based Battery Charger ATMega 8535 With LCD Display This is an idea that had just emerged from the author. In AVR-Based Battery Charger design ATMega 8535 With LCD Display is using AVR microcontroller processor charger with ATMega 8535, process the data viewer charger with LCD, a safety from a hot temperature with the temperature sensor LM35 and several buttons for setting the charger. And component power charger Battery Charger Based on AVR ATMega 8535 With LCD Display is a FET. Click to view larger Function-Based Battery Charger Part Series AVR ATMega 8535 With LCD Display ATMega 8535 AVR microcontroller serves as the controlling process of the charger. Button S1 - S5 as input data charger settings (setting the current, maximum temperature, peak voltage batterie...