Ni-MH Batteries balancer

Balancing Ni-MH Battery Packs

joribo - 09/08/14

There are still a lot of hand-held tools in use with Ni-Cd or Ni-MH batteries. The simple charger [...]
12V universal charger

XL6009 12V Universal Charger for Laptop/Notebook

T.K. Hareendran - 07/21/14

I recently failed to resist buying a compact power module from eBay for almost nothing! As usual, thereafter [...]
battery voltage level indicator

Robot Battery Meter

T.K. Hareendran - 07/10/14

Often, simple robotics projects are powered from a small power bank consists of common dry cells (1.5Vx4=6V) or [...]
tp4056 lipo battery charger circuit

TP4056 LiPo Battery Charger For RC Toys

T.K. Hareendran - 07/05/14

Lithium Polymer (LiPo) battery is a type of rechargeable battery that provides high energy storage to weight ratios [...]
car battery charger

Low-loss Car Battery Charger

joribo - 06/20/14

Low-loss car battery charger presented here can be used for a lead-acid battery with liquid acid, typical size [...]

Low Dropout Adjustable Breadboard Power Supply

GaryC - 05/19/14

This project details the design of a very low dropout adjustable power supply. A good power supply is [...]
Classic Full-Wave Bridge

Enhanced Voltage Doubler Power Supplies

Jim Keith - 05/11/14

While most readers are knowledgeable about voltage doublers, here is a discussion about how to use them in [...]
Li-Ion battery charger circuit

3.7V Li-Ion Battery Charger Circuit

T.K. Hareendran - 03/06/14

Here is a tried and tested sample circuit of a Li-Ion battery charger that can be used to [...]
Synchronous Rectifier for Reverse Battery Protection Schematic

Synchronous MOSFET Rectifier for Reverse Battery Protection

Jim Keith - 01/18/14

When powering a battery operated circuit, the experimenter must make a decision: either take his chances (Murphy loves [...]

High Power Car Voltage Regulator

GaryC - 01/05/14

While traveling recently, my family had trouble powering the 5 smartphones, 2 tablets, and 2 laptops while driving [...]
Battery Discharge Cut-off Control Schematic

Battery Discharge Cut-off Control

Jim Keith - 01/04/14

This circuit prevents over-discharge of a lead-acid battery by opening a relay contact when the voltage drops to [...]

Secure Power Switch Circuit

T.K. Hareendran - 01/02/14

Most of the diagnostic, treatment, and life support devices used in healthcare require regular power supply in order [...]
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