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Lead-Acid Battery Charger, 12V 6A, Using Hysteretic SMPS Circuit With Auto Float-Charge 2018-04-09

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crutschow

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crutschow submitted a new article:

6A, 12V Lead-Acid Battery Charger Uses Hysteretic SMPS Circuit With Auto Trickle-Charge - Simple, efficient, lead-acid battery charger auto switches from CC to CV trickle-charge mode

--Article Being Edited--

For optimum charging of lead-acid batteries a 3-step technique is often used, consisting of an initial constant-current charge, then a high constant-voltage top-off, and finally a lower constant voltage trickle-charge.
But a simpler two-step technique can also work fairly well, which is to start with a constant-current until the battery reaches a specific voltage, indicating it is near a full charge (≈90%), and then revert to a constant-voltage mode at a...
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crutschow

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Mick B

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Hello, I'm quite the noob, please bear with me. I want more than anything to COMPLETELY UNDERSTAND your circuit. I was wanting to build something like this for my lawnmower. for over the winter. Are you saying It wont work with perfboard? If so why not. I would very much like to build/prototype this I had to lookup the data sheets on some of the components just to see what they do
I'm not sure how exactly how the PWM is developed and I do not know anything about a poor-mans GATE I will try to look this stuff up. any help would be appreciated. Thanks Mick
 
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