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Unclassified
Battery Charger Circuits, page 5
Battery Charges
Alkaline
Lead Acid
Lithium
Nickel
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Updated on:
Thursday, November 30, 2017 01:57 PM |
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Got Designs?
Please eMail if you want me to link to and/or post your original design. Thanks. |
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Links to electronic circuits, electronic schematics, designs for engineers, hobbyists,
students & inventors:
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Lead Acid Battery Charger (LM317) - The above pictured
schematic diagram is just a standard constant current model with a
added current limiter, consisting of Q1, R1, and R4. The moment
too much current is flowing biases Q1 and drops the output voltage.
The output voltage is: 1.2 x (P1+R2+R3)/R3 volt. Current
limiting kicks in when the current is about 0.6/R1 amp.... [Tony van
Roon's circuit] |
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Lead Acid Battery Charger using the PIC14c000 - Microchip
Application Note Published 26-Aug-97 (app note added 2/06)
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Lead Acid Battery Charger with Float - The circuit furnishes
an initial charge voltage of 2.5 Volt-per-cell at 25°C to rapidly
charge a Lead-Acid battery. The charging current decreases as the
battery charges, and when the current drops to about 180mA, the
charging circuit reduces the output voltage to 2.35 Volt-per-cell,
floating the battery in a fully charged state. This lower voltage
prevents the battery from overcharging, which would shorten its life.
The LM301A (Tony van Roon's U3) compares the voltage drop across R1
with an 18-mV reference set by R2. The comparator's output
controls the voltage regulator, forcing it to produce the lower float
voltage when the battery-charging current passing.... [Tony van
Roon's circuit] |
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Lead Acid Charger Gel Cell - This high-performance circuit first quickly
starts (Tony van Roon's and holds) the charge at 2 amp, but as the voltage rises
the current will consequently decrease. When the current falls below 150mA,
the charger automatically switches to a lower 'Float' voltage to prevent
overcharging. At the point that a full charge is reached, Q1 will bias and the LED
will light…. [Tony van Roon's circuit] |
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Lead Acid Charger Signals End of Charge - 09/12/97 EDN-Design Ideas
The lead-acid battery charger in Figure 1 works with either gel- or wet-cell,
lead-acid, 12V batteries. The charger includes the proper temperature compensation
for the charger output voltage as well as a detector that signals when the battery
is fully charged.... [Design Idea by Chester Simpson, National Semiconductor,
Santa Clara, CA] |
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Lead acid trickle charger - Schematic only, no circuit description
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Lead-Acid Battery Charger with Voltage Analyser - (electronic Circuit /
Schematic added 10/04) |
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Motorcycle Battery Charger - This 3A charger was originally designed to
work with small batteries like those used in motorcycles. In principle it can be
used to charge car batteries also but will take a lot longer. The charger below
charges a battery with a constant current to 14.1 volt. When this level is
reached, the current charge drops automatically to a safer level (13.6V) and keeps
charging.... [Jan Hamer, The Netherlands] |
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New Battery Charger ICs Need No Heat Sinks - DN124 Design Notes
(Linear Technology) (app note added 2/06) |
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New Components & Design Methods Bring Intelligence to Battery Charger Applications
- Microchip Application Note Published 19-Nov-04 (app note added 2/06)
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Optimizing High-Frequency Battery Charger Performance for Worldwide Applications
- 07/06/00 EDN-Design Ideas Providing Power for electric vehicles for
worldwide use requires knowledge of energy conserving and high efficiency
technologies....[Design Idea added 5/02] EDN migrating links. This link is not
verified. Google the "title" EDN for new link. |
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Battery
Charges
Alkaline
Lead Acid
Lithium
Nickel |
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