12V rectifier with variable intensity regulation from 0A to 10A

Hello.
Looking for a 12V rectifier scheme with smooth regulation of intensity up to 10A. It would be good if it had the protection against overcharging the battery. I want to use it to charge the battery from the electric motor in the boat (100A battery). As far as I know, the battery should land for 1 \ 10 of the battery capacity, which gives us 10A, and the regulation will be useful if I would like to charge another battery I am asking for help, I was looking for a project on the elce, but I have not found anything specific.
Regards, Maciej.

Charging the car type battery does not require the use of current regulation, but rather only current limitations and, of course, voltage limitation.
See (as an idea, not a ready solution!) Topic here:
https://www.elektroda.pl/rtvforum/topic705989.html#3636891, look at my post 02 Mar 2007 23:56, such an arrangement is "unbeatable", in a slightly simpler version (Zener diode instead of LM-a) was in the notebook of applications for thyristors LAMINA some 45 years ago, it works today ...

Well, I see a 6V solution here. From what is well-known it must be a current limitation, voltage limitation, as you mentioned earlier, only some protection against overcharging the battery and against its damage would be useful.

"Maintenance-free" batteries - that is, of the current design, can be charged up to 14.4V (aku 12V), which is the limit above which gasification, electrolyte loss and battery damage begin. Below this voltage, you can limit the initial charging current, eg to the value "C10", although in real operating conditions - when the battery is charged by an alternator - this current is often much larger and does not cause any negative effects. The alternator is, however, "controlled" by a regeler, which does not allow to increase the voltage above 14.4V.
The system that I propose meets these conditions, and is not an "experiment", I have used it myself for many years and I can recommend it with full conviction.

So yes. I want to get 10A, 14.4V at the output. Do I have to change the resistor values? Because the triac is probably more powerful to give to endure? The right thing to do is a minimum of 10A so that the stock had it so with 150W (150W / 12V = 12,5A) I know it. This scheme is good?



 

So:
The SCHEME IS GOOD, but you need to change the value of the elements:
1 - not on 150W, only slightly higher, e.g. about 200W, secondary voltage about 18 - 20V AC (or 2x18 - 20V)
2 - resistors must be changed so that the voltage of the end of charging is 14.4V (the adjustment method is described in the previous link),
3 - not a triac, only a thyristor, at least 15A, on a heat sink of approx. 100cm2,
4 - you also need to change the LEDs for example 10Amperowe (should be mounted on the heat sink!), It can be a bridge (4 diodes), then only one secondary winding is in the way,
5 - the bulb must be matched to the size of the current limitation, for 10A I suggest a two-fiber car light from the headlamps, eg 12V / 55 / 65W with both fibers connected in parallel. This bulb limits the initial rejection of the current to a value of about 10A, then stabilizes the current and simultaneously signals its flow, and after charging it goes out and pulsates poorly (it grows) in the rhythm of about 1 - 2 seconds. In addition, it is a fuse.

I understand. Trafo 200W will cost a little, and the ready microprocessor rectifiers can be kicked for as little as PLN 150. It pays to do it?

It is not necessary to use microprocessor rectifiers to charge car type batteries.
Calculation for you: approx. 50.-, thyristor approx. 5.-, bridge approx. 5.-, LM and resistors - a total of PLN 2.00, bulb - hmmm, you can use, for example, 2 pieces of headlamps with with one burnt fiber, probably somewhere in the garage ...

I do not know if it pays to do, but this is where hobbyists are usually found rather than investors ...

It's simple that if you do something yourself, you know what is the possibility, I will not say about self-satisfaction that results from doing something yourself. You can give specific values of resistors, thyristor and diodes.

Added after 12 [minutes]: < br />

 So yes:
Tyristor - BT152 / 600R 20A, 600V price PLN 5
Bridge rectifier - 25A / 1000V Cubes price PLN 5
LM317T - price PLN 1
Resistors - I have 1 / 4W
A light bulb, it will be quietly somewhere in the garage.
Transformer is left, can you recommend a shop? I will order these parts in the Eltexco shop but they do not have such transformers in their offer.

Added after 16 [minutes]: < br />

 I understand this scheme:
[img] & lt; img src = "https://obrazki.elektroda.pl/48_1186131451.jpg" & gt; [/ img]
Only one bridge rectifier, and other resistor values, and a more powerful triac.

Browse Allegro:
http://www.allegro.pl/search.php?string=transformator&buy=0&new=0&pay=0
There are 365 offers that have the word "transformer", maybe something will be found.
If not, there are a lot of online stores, look for ...

I close the topic.