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AA Battery Solar Charger 1: This almost trivial
circuit may be used to charge a pair of AA or AAA
sized cells in the sun. I have used it to keep my
Palm Pilot and walkman radio running perpetually.
This is an unregulated charger, proper charging is
achieved by placing the unit in the sun for a known
amount of Time, this Time varies according to the
battery type. |
AA Battery Solar Charger 2 |
AC Powered NiCad Battery Charger |
Alkaline battery charger |
Automatic 9 Volt NiCd Battery Charger |
Automatic Charger for Battery Operated Hi Fi Preamps |
Battery Charger Takes on Two Roles |
Battery Chargers indicates Rate of Charge:
A single LED indicates
whether the battery Chargers s delivering a trickle
charge or a fast charge, circuit designed to
charge2-14 cells |
Battery Chargers |
Battery Discharge Monitor |
Buck Converter Chargers Also Provides System Power:
Switching
Regulator provides the charge voltage set point with
Current regulation, and second Switching Regulator
provides5V System Power |
Build a Smart Battery Charger Using a
Single Transistor Circuit:
The following automatic
battery-charger design is created with a circuit
that could qualify as the simplest window comparator
ever built around a single transistor (see the
figure). It starts charging... |
Car Battery Charger:
quickly and easily charge
most any lead acid battery, automatically turns
charging off when ready |
Car NiCd Charger:
This circuit provides up
to20-Volt output from a regular13.2V automotive
battery, to enable constant current charging of NiCd
battery packs up to15 cells @1.2V (18V total).
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Charge Li Ion Batteries From AC Line Voltage:
Converts energy from120
Volt AC to a regulated voltage or Current as
necessary to charge two Li ion Cells in series |
Charge Monitor for 12 Volt Rechargeable Lead Acid
Battery |
Charger Selects Between Full & Trickle Charge |
Charger Serves Load While Charging Battery |
Chargers Delivers 2.5With 96% Efficiency |
Constant Current Battery Charger |
Constant Current NiCd Charger: The schematic for
this charger is pretty simple. You can charge from1
to20 +/- NiCads at a constant current of from20
to200 ma +/-. |
DC Input Controls Efficient Battery Charger |
Deluxe Battery Charge Rate Monitor |
Gel Cell Charger #2 |
GellCell Battery Charger: circuit to charge a
Gell Cell or other lead-acid type battery, includes
sense circuit |
High Efficiency 3Battery Chargers Use LM2576
Regulators: National Semiconductor Application
Notes,05 Aug1995 |
IC Controlled Emergency Light With Charger |
Lead Acid Charger Signals End of Charge:
Lead acid Battery
Charger that works with either gel or wet Cell, lead
acid,12V Batteries |
Lead Acid Trickle Charger |
Lithium charger |
LTC1265 NiCd Charger |
Make your Own Simple Rx / TX Battery Charger With
Peak Detect: This circuit is designed to peak
charge Rx and TX batteries. Its programmed for a C/2
charge rate for250mAh and500mAh batteries (charge
currents of125mA or250mA). Itll charge Rx from12V at
the field, TX from a15-Volt supply (like a car
w/engine running). Use a15-18V supply to charge at
home (you should be able to find wall cubes with
this rating). It is based on a Maxim IC, the MAX713.
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Motorcycle Battery Charger |
Nicad battery charger |
NiCd Battery Charger: uses a single transistor
as a constant current source |
NiCd Charge Rate Monitor |
NiCd or NiMH Battery Charger: This charger can
be used for AAA, AA and Baby C batteries. This
battery charger is based on MAX712/MAX713.
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NiMH / NiCd Switched Mode Fast Charger: 4/5
Phase fast charge algorithm, allowing fast but
Battery friendly charging |
Optimizing High Frequency Battery Charger
Performance for Worldwide Applications: Providing Power for electric
vehicles for worldwide use requires knowledge of
energy conserving and high efficiency technologies |
PIC NiCd Battery Charger |
Power inverter is bidirectional:
If you want to swap charge in
either direction between unevenly loaded positive
and negative battery buses, you need an inverting dc
transformer. One implementation is the symmetrical flyback converter shown in Figure 1. The circuit can
generate a negative output from a positive supply or
a positive output from a negative supply.. |
Remote Charging Circuit uses Three Wire Sensing:
Remote voltage sensing
usually uses a four wire sensing System, this System
works with three Wires |
SCC2 1012 / 24 Volt Solar Charge Controller |
Sealed Lead Acid Battery Charger Design
Documentation: based on the UniTrode UC3906
Integrated Circuit |
Shunt Battery Charger Provides 1Continuous Current:
A shunt method is
Preferable than series regulation in Solar Powered
Systems |
Simple Car Battery Charger |
Simple Circuit Charges Lead Acid Batteries |
Single Cell Lithium Battery Charger |
Smart Battery Charger |
Solar Cell NiCd Charger |
Solar Charger for Lead Acid Batteries: Solar
lead acid charger, with battery voltage monitor,
for12V battery |
Solar Panel Charge Controller / Low Voltage
Disconnect Circuit: Lead acid charger, with
battery voltage monitor, power comes from solar
panels |
Solar Power Recharge |
Super Fast Battery Charger Design With NeuFuz:
National Semiconductor Application Notes,05 Aug1995
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Supply derives 5 and 3.3V from USB port:
The circuit in
Figure 1 derives its power from a USB port and
produces 5 and 3.3V supply rails for portable
devices, such as digital cameras, MP3 players, and PDAs. The circuit allows the port to maintain
communications while, for example, charging a
lithium-ion battery. IC2 boosts the battery voltage,
VBATT, to 5V, and IC3 buck-regulates that 5V output
down to 3. . |
Switching Current Pump Makes Better Charger |
Temperature Controlled NiCd Charger |
Trickle Charger: Explains what trickle charging
is, contains some basic trickle charging circuits.
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Typical Rechargeable Flashlight Schematics |
VK3EM Sealed Lead Acid Battery Charger MK II: A
high-tech lead acid charger, uses the uc3906 chip
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