Circuit Calibrated Current For Battery Charger. Power Supply Voltage Input Calibrated.
Parts List: Resistors: 10K(7), SOT 16K4 & 6.9K, 470 Ohm(2), 4K7(2), 1K(3), 47 ohm/5W, 47ohm(2 parallel). Capacitors: 10uF (electrolytic), 0.1uF (ceramic). Transistors: BD681(2), BC548(1) Diodes: 1N4001(2) Led’s: Red, 5mm(2) IC: LM3900, 14pin, plus 14-pin socket Switches: Momentary, push-on(2) The Care Continue reading
I Find circuit Chartger battery AA NiMH for USB port. I see to Good WEB : http://www.stefanv.com/electronics/ Detail : In a recent blog entry, I complained about all the chargers and wall warts I need to carry with me when Continue reading
This is a charger for lithium ion batteries which takes its power from the USB port of a computer. It uses the MCP73861 or MCP73863 Li-ion battery charger chip manufactured by Microchip. Read More Source: http://www.instructables.com/id/USB-Li-ion-battery-charger/ Thank you.
Portable iPod charger that you can use while away from your computer. The circuit is based around an MC34063 switchmode regulator. This has high efficiency so that there is very little heat produced inside the box, even when delivering its Continue reading
To use portable devices such as digital camera, wireless headphone, pocket radio, etc, which they operates with two “AAA” size batteries, using rechargeable Ni-Cd batteries is a conscionable way to reduce cost. Above circuit has been designed to charge automatically Continue reading
This circuit is intended for charging lead-acid batteries with a solar panel. The customary diode that prevents the battery from discharging through the solar panel has been replaced by a FET-comparator combination. The charger will stop charging once a pre-set Continue reading
This battery charger charges a NIMH 5-pack battery used in the BiPed robot in less than 1 hour, and charges the 10-pack NiCd used in the Snuf robot in about 30 minutes. To prevent overheating of the battery, the charging Continue reading
The circuit’s pretty simple, basicly it’s just a voltage regulator. Both the LM317 and the REG1117A (LDO) fit the PCB, maybe there are even more types that I’m aware of that can be used on it. I did add one Continue reading
The charger in this project is designed to charge two AA NiMH or NiCd cells of any capacity (as long as they are the same) at about 470mA. It will charge 700mAh NiCds in about 1.5 hours, 1500mAh NiMHs in Continue reading