This circuit is designed
to monitor two alkaline cells (3v) that
form the battery often used in portable
electronic equipment. It use an
inexpensive IC from Panasonic that is
connected to an efficient LED flashing
circuit. When the battery voltage drops
below a certain point the circuit
flashes the LED. In the off state the
circuit draws only 1uA, while in the
active flashing state it draws 20uA.
Published in EDN, Jan 2, 1997
Battery Monitor in MultipleCell Applications:
Maxim APP 405: May 04, 2001 / The DS2760 and DS2761
battery monitor and protector are battery management
ICs geared mainly for single-cell Li-Ion battery
pack applications. Although designed mainly for use
in the single cell applications, these devices can
be used in multiple-cell applications. This
application note demonstrates to the user how to use
the DS2760 or DS2761 in a multiple-cell application
including necessary circuit modifications and
limitations in functionality of the devices in the
multiple-cell environment. An example circuit is
shown along with recommended device configuration of
the DS2760 or DS2761 battery monitors.
Circuit Prevents Deep Discharge of Batteries:
EDN Design Ideas to avoid the deep
discharge that can destroy or shorten the life of a
rechargeable Battery, you must disconnect its Load
before the discharge is complete
Circuit Protects Battery From Over discharge: PDF contains
multiple circuits - scroll to find the one of
interest / In some applications, it is undesirable
to Over discharge the battery, because it could
irreversibly reduce the battery's capacity and the
number of discharge/charge cycles. This circuit
protects a single NiMH (nickel-metal-hydride) cell
by disconnecting the load from the battery when it
gets discharged enough.
Low battery indicator uses flea power
It is always desirable to use a
low-battery indicator that consumes as little power
as possible. For a 9V, 450-mAhr alkaline battery, a
50-�A low-battery indicator can by itself run the
battery down in a little more than a year.
Battery-powered devices that need to run
continuously for a long time require battery
indicators that consume minimal power....
MicroAmps Monitor Dual Supply Batteries:
Low Power Circuit
monitors two 9V Batteries in a dual Supply
configuration and turns on the Battery Low LED if
either Battery Voltage drops below its limit
