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Make a Simple Battery
Status Monitor - Monitor battery status with this easy
electric circuit project - no skill required!. . . . [REUK-Renewable Energy UK website]
Maximizing Battery
Life in Communications Systems - Analog Devices-Analog
Dialogue. . . [by Clarke, Bob]
Measuring the Capacity of
a Battery - Find out how to measure the capacity of a
battery. . . . [REUK-Renewable Energy UK website]
Microamps monitor
dual-supply batteries - 03/02/98 EDN Design Idea (File
contains many circuits, please scroll to find this one)05D21691The low-power circuit in Figure 1 monitors two 9V
batteries in a dual-supply configuration and turns on the Battery Low LED if either battery voltage drops below
its limit. It also provides two shutdown signals you can use to turn off voltage regulators, such as Maxim's
MAX663/664 positive and negative regulators. By using low-power voltage references and op amps, the circuit holds
the current drain to approximately 45 µA from each battery, with the positive drain rising to approximately 1 mA
when the LED turns on. . . . [by Bruce Anderson, University of Wisconsin--Madison]
Micropower DC/DC Converter with Independent Low-Battery Detector LT1304 - DN120 Design Notes (Linear Technology). . . [Linear Technology]
Model Aeroplane Navigation
Strobe/Battery Level Indicator - If you are interested in
model aeroplanes and have the capital, a radio controlled electric park flyer is a must have. An RC aeroplane
under 400 grams floats around like the rubber models of my youth and contact with the ground doesn't seems to
involve that sickening crunch. . . [Electronic communications to r dot p at webone.com.au]
Monitor battery voltage with this circuit - 11/21/96 EDN Design Idea The circuits in Figure 1 monitors four NiCd rechargeable
batteries and causes the LED to flash if the voltage of the batteries goes lower than 4V. The circuit consumes
only 8 mA of current under normal operating conditions. . . . [by Yongping Xia, Philips Lighting Electronics Co,
Torrance, CA]
Monitor Circuit Conserves Battery Energy - 04/19/12 EDN
Design Idea Many battery-powered systems require a visual indication when the battery needs replacement. LEDs
often serve as the indicator, but they can draw as much as 10 mA of current. This excessive current drain unduly
accelerates the battery’s discharging and cu. . . [by Brian Huffman, Linear Technology Corp, Milpitas, CA ]
Motor Accu Lader (Dutch language) - . . . [Tony van Roon's circuit]
Nine-Volt Battery Voltage
Monitor - This circuit turns on a LED whenever the
voltage of a standard 9v battery connected to the circuit drops below 7. 2 volts. It uses a LTC1440 comparator,
which also contains a 1. 18v reference diode. In standby mode, the circuit draws only 4uA . . . [Circuit by Dave
Johnson P.E., 07/09/06]
NMH/NiCd 6v Battery
Tester - I designed this circuit to test rechargeable
six volt battery packs under constant current conditions. As designed, the circuit applies a 10 amp load to the
battery pack. A heat sink must be used on the main power transistor . . . [Hobby Circuit designed by David
Johnson P.E., 12/12/04]
Notebook battery charger monitor -
STMicroelectronics-Application. . .
Optimizing Battery Life in DC Boost Converters Using MCP1640 - AN1337 - Technology Inc. . . . [Microchip App Note last updated on 6-Oct-10]
Optimizing Bluetooth Device
Battery Drain Measurements in Manufacturing - Application
Note. . . [Aligent]
Overload & Reverse Current Circuitry Protects Battery & Load - 03/01/96 EDN Design Idea Battery-operated equipment is prone to the consequences of
backward-installed batteries, accidental short circuits, and other careless use. The effects of a reversed
battery are critical. Unfortunately, it's difficult to guard ag. . . [by Dana Davis, Maxim Integrated Products]
Phantom Power Battery Test Circuit - LED will light when battery is over42 volts. . . [Jenson Transformers]
Preamp & 330 + MHz Prescaler - A preamp that drives the CMOS counter input and a divide by 10 prescaler to extend the
range. . . [From Dick Cappels' project pages]
Precision Audio Frequency Peak Detection Probe
- This is a handy companion for a digital voltmeter. Its
allowed me to do a lot of things I used to use my oscilloscope for, and in addition it measures voltages to much
greater precision. Using an LM324 quad op amp, this peak detector provides 2% measurement accuracy on square
waves from 5 Hz to 20 kHz. . . . [From Dick Cappels' project pages]
Prevent Deep Discharge of Battery - 09/26/96 EDN Design Idea NOTEPage includes several designs, scroll to find this onemCs
such as the 8051 and 8096 and UARTs such as the 82510 provide hardware support for a multiprocessor asynchronous
serial-communication protocol (MicroLan]. This featu. . . [by Rolando Herrero, Instituto Tecnologico de Buenos
Aires, Argentina]
Prevents Deep Discharge of Battery - 09/26/96 EDN Design Idea NOTEPage includes several designs, scroll to find this onemCs
such as the 8051 and 8096 and UARTs such as the 82510 provide hardware support for a multiprocessor asynchronous
serial-communication protocol (MicroLan]. This featu. . . [by Rolando Herrero, Instituto Tecnologico de Buenos
Aires, Argentina]
Protect Battery from Overdischarge - 04/12/01 EDN Design
Idea All electronic circuits powered by a battery discharge the battery. In some applications, it is
undesirable to overdischarge the battery, because it could irreversibly reduce the battery’s capacity and the
number of discharge/cha. . . [by Martin Wuzik, Implex AG Hearing Technology, Ismaning, Germany]
Protects Battery from Overdischarge - 04/12/01 EDN Design
Idea All electronic circuits powered by a battery discharge the battery. In some applications, it is
undesirable to overdischarge the battery, because it could irreversibly reduce the battery’s capacity and the
number of discharge/cha. . . [by Martin Wuzik, Implex AG Hearing Technology, Ismaning, Germany] |
