I have recently used building a desulfator as an excuse to really get into building circuits and electronics. I have learned quite a bit from my desulfator thread but there is still much to learn. It is mostly filled with my countless questions: http://forum.allaboutcircuits.com/showthread.php?t=49043
In order to prevent the batteries from going flat and essentially killing them as they are being desulfated I will need to constantly charge them at a low current.
The plan to to build what I am sure most people on this forum have a solid understanding of. A power supply. As the batteries state that the optimal float charge is 13.5 volts that is what I am going for, preferable regulated. Seeing as desulfators work slowly and take little current themselves and that I do not want to damage the batteries it would also need to be current limited. I think that as little as 100ma would be enough but maybe I should go with 150ma or 200ma, any more and I suspect that all I would be doing is heating my batteries. Seeing as the battery desulfator gives off potentally damaging pulses I am also considering doing something to prevent them from flowing into my power supply, maybe some kind of inductor.
I have never designed a circuit before and am unsure how to go about it but I will give it a go. I will use those immortal words "what is the worst that can happen" as I play with electricity.
To start with I will need a transformer to lower the voltage from 220-240v. I know the regulating process reduces the voltage and other factors will need to be taken into account. What transformer do I need to buy/make to get the voltage that will eventually give me 13.5 volts?
I know that a simple rectifier will turn 50Hz AC into 100Hz DC which is then smoothed slightly by a capacitor, then smoothed again by other componants. This is where my knowledge gets sketchy. I have found basic regulated circuit schematics but I don't know what values the components require for 13.5 volts they all seem to be for 12 volts. What would you advise?
How would I current limit the circuit without compromising voltage?
Would inductors provide the necessary protection from the desulfator and if so where would it/they be best placed and what values?
I hope I have made sense and have explained everything clearly, if not give me a poke.
Thank you
In order to prevent the batteries from going flat and essentially killing them as they are being desulfated I will need to constantly charge them at a low current.
The plan to to build what I am sure most people on this forum have a solid understanding of. A power supply. As the batteries state that the optimal float charge is 13.5 volts that is what I am going for, preferable regulated. Seeing as desulfators work slowly and take little current themselves and that I do not want to damage the batteries it would also need to be current limited. I think that as little as 100ma would be enough but maybe I should go with 150ma or 200ma, any more and I suspect that all I would be doing is heating my batteries. Seeing as the battery desulfator gives off potentally damaging pulses I am also considering doing something to prevent them from flowing into my power supply, maybe some kind of inductor.
I have never designed a circuit before and am unsure how to go about it but I will give it a go. I will use those immortal words "what is the worst that can happen" as I play with electricity.
To start with I will need a transformer to lower the voltage from 220-240v. I know the regulating process reduces the voltage and other factors will need to be taken into account. What transformer do I need to buy/make to get the voltage that will eventually give me 13.5 volts?
I know that a simple rectifier will turn 50Hz AC into 100Hz DC which is then smoothed slightly by a capacitor, then smoothed again by other componants. This is where my knowledge gets sketchy. I have found basic regulated circuit schematics but I don't know what values the components require for 13.5 volts they all seem to be for 12 volts. What would you advise?
How would I current limit the circuit without compromising voltage?
Would inductors provide the necessary protection from the desulfator and if so where would it/they be best placed and what values?
I hope I have made sense and have explained everything clearly, if not give me a poke.
Thank you