Charger for All Battery Types

Charger for All Battery Types
Note that the stability is observed when the load current and will change slightly of the supply voltage. Likewise, the fact is usually overlooked, but if you want a perfect stability - stabilize the power supply. Calculation of the current is very simple - the current in amperes is equal to 1.2 divided by the resistance R1 in Ohms. To display the current used transistor (germanium necessarily because of the low voltage opening) that allows you to visually observe

60 Watt Laptop Battery Charger

60 Watt Laptop Battery Charger
The circuit is designed for laptop battery charger with 20V output voltage. This circuit uses TOP 246 Y made ​​by Power integrations. TOP 246 Y eliminates half the discrete components compared with the UC3842. As promised Power Integration, this IC is more reliable, has a smaller form, reducing the time in designing and saving costs. (more…)

12 Volt Battery charger

12 Volt Battery charger
The following schematic is a high-performance battery charger for gelled electrolyte lead acid battery. Battery charger quickly recharges lead acid battery  and shuts off at a full charge. Innitially, charging current has limitations to 2 Ampere. While the battery voltage goes up, current to the lead acid battery  decrease, and if the current has decrease to 150 mA, the battery charger changes to a lower float voltage protecting against overcharge. (more…)

Mobile Charger with Voltage Converter

Mobile Charger with Voltage Converter
The circuit allows a simple and safe charging of 1-10 Ni-Cd or Ni-MH cells from a 12V source. The voltage converter can be operated at 6V, in this case is the max. output voltage 12V (no load). The performance can be improved through the use of Schottky diodes (D2/D3). D4 (LED) can omitted if you dont want any indicator. An astable Mutivibrator generates the oscillation frequency. At the output (pin 3) connected the voltage doubler. At C5 is idling

Simple 12 Volt Battery charger

Simple 12 Volt Battery charger
This kind of battery charger circuit will quickly and easily recharge almost every lead acid battery pack.This battery charger supplies maximum current till the current drawn by the battery falls to 150 miliamper. At this point, less voltage will be applied to complete and avoid over charging. Once the lead acid battery is completely charged, this circuit goes off and lights up the led, showing that the battery has completed to be charged. A suitable heat sink should be