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Automatic 12V Lead-Acid
Battery Charger - schematic only, no circuit description at this
time...[Circuit Designed by Andrew R. Morris] |
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Automatic Charger for Battery Operated Hi-Fi Preamps - (electronic circuit
added 7/03) |
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Automatic Trickle Charger - Here is the schematic for the automatic charger
I have been using for my kids' battery cars. The charger is a small molded unit that
probably doesn't supply more than an amp and this circuit would have trouble with much
more. No current limit is provided by this circuit - it relies on the charger for
that. The circuit could be modified to provide more current by....scroll to find this
one.... [from Charles Wentzel's web site] |
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Battery charger (Seiichi Inoue) - This project is not so important for those
who ride a car every day. In my case, a car is not used every day. In that case, the
voltage of a battery is falling and a car sometimes cannot be put into
operation.….(added 04/05/06) |
Battery Monitor for 12V Lead-Acid - This simple circuit makes it posible to
monitor the charging process to a higher level. If you need more information then
check out the LM3914 Datasheet.
Final adjustsments are simple and the only thing needed is a digital voltmeter for the
necessary accuracy.…. [Jan Hamer's circuit] |
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Car Battery Charger - quickly and easily charge most any lead acid battery,
automatically turns charging off when ready…. [Design by Aaron Cake] |
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Car-Battery Charger - An SCR Design with a 10 Amp rating. ….(design
added 12/08) |
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Charge indicator gauges lead-acid batteries - 05/27/99 EDN-Design Ideas
Although rechargeable, sealed lead-acid cells are uncommon in portable
applications, they are a good choice for standby applications, such as emergency
lighting and burglar alarms. A key advantage…PDF has several circuits, please scroll
to find this one…. [Design Idea by Fran Hoffart, Linear Technology Corp, Milpitas, CA] |
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Charge Monitor for 12 Volt Rechargeable Lead Acid Battery - (circuit /
schematic design added 6/06) |
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Charger for Gel Lead Acid Batteries - 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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