Electronic Engineering Schematics
Li-Ion Battery Charger - del90005
This circuit is built around LM3647 an Universal Battery
Charger, This Circuit is an untested design. It is based
on application hints and was provided as an example to the user.
This circuit gives a 12V DC from mains or battery and the
battery is also charged when power resumes.
There are tools that help you check out your concept, on paper
Designer and WEBENCH
U1D monitors charge current and U1B monitors battery voltage
these values are the feedback to charge controller U3. U1C
drives Q2 to Control the charging process by switching in
The LM7812 with a 2N6107 Current Booster Regulate the battery
and mains DC to a 12V for powering the Product Circuits.
Types of Batteries, their chemistry and charging methods - Battery
Charger and Rechargeable Batteries
To view the circuit below, Click the Link of PNG or PDF and
view the Circuit, PNG can be Scrolled with Drag-Drop
Left-Click-Mouse and you could use the PDF to take a paper
print for reference only.
Battery Charger - del90005
Below is a Preview Image Linked to the Larger Circuit
Portable electronics have got a big boost due to batteries like
Li-Ion. Here is a decade old circuit to charge a large battery.
It can be scaled up or down in power. It has current and voltage
Single chip battery charge controllers are common today, so are
Li-Ion, above circuit is more than a decade old.
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20th Mar 2020