Lead Acid Battery Charger Circuits  Page 2
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Last Updated on: Tuesday, October 28, 2014 06:40 PM
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Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
Gel cell Battery Charger - circuit to charge a Gell Cell or other lead-acid type battery, includes sense circuit (added 2/05)
Gel Cell Charger, I - (Tony van Roon's schematic / circuit added 08/09)
Gel Cell Charger, II - (Tony van Roon's schematic / circuit added 10/02)
Homemade "B" Battery - I recently purchased a couple of old battery-powered tube radios on eBay with the idea of using their cases to house a transistor radio project...(electronic design added 08/08/08)
IC Controlled Emergency Light with Charger - (electronic Circuit / Schematic added 10/04)
Lead Acid Battery Charger - Except for use as a normal Battery Charger, this circuit is perfect to 'constant-charge' a 12-Volt Lead-Acid Battery, like the one in your flight box, and keep it in optimum charged condition.  This circuit is not recommended for GELL-TYPE batteries since it draws to much current.... (Tony van Roon's electronic circuit added 2/06)

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 schematic / circuit added 08/09)
Lead Acid Battery Charger using the PIC14c000 - Microchip Application Note Published 26-Aug-97  (app note added 2/06)
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.... (Tony van Roon's electronic design added 2/06)
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 electronic design added 2/06)
Lead Acid Charger Signals End of Charge - 09/12/97 EDN-Design Ideas:.....(design idea added 4/02 /Lead acid Battery Charger that works with either gel or wet Cell, lead acid,12V Batteries
Lead-Acid Battery Charger with Voltage Analyser - (electronic Circuit / Schematic added 10/04)
Motorcycle Battery Charger - (Tony van Roon's schematic / circuit added 10/02)
New Battery Charger ICs Need No Heat Sinks - DN124  Design Notes (Linear Technology) (app note added 2/06)
New Components & Design Methods Bring Intelligence to Battery Charger Applications - Microchip Application Note Published 19-Nov-04  (app note added 2/06)
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)
 

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