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I'm getting some consistently very odd and I believe strange effects with this simple circuit that doesn't seem explainable by regular electrical circuit theory unless I'm missing something (and that's very possible). I believe this circuit has similarities to the mechanical Tesla Switch but in a very simplified form. I've wanted to build a 4 battery mechanical Tesla switch but lacking the time and all the parts I decided to try this after seeing someone do something similar on another forum with 5 AA batteries (3 charging 2). That experimenter originally removed one of the commutators from his DC motor but later tried his circuit without removing a commutator and it seemed to work just as well. I left mine on. I also am using three 12 volt car batteries instead of AA NiMH and all three of these car batteries were in very poor condition and likely sulfated or with dead cells. I had spent weeks trying to charge them with a regular car charger using 2 amps to 10 amps charging current. They would always fall back to a level that indicated they had sulfation or a dead cell. I had also tried a pulse charger circuit I built on them with little luck. At this time I think two are still probably running 1 cell short but one seems to be recovered since I've been using this Motor pulse circuit.
However that's not the strange part at all. Bear with me please as this may take some explanation about a couple of the oddities I've found while charging them with the circuit below.
First odd effect: I often run a regular battery charger across a single battery (A in this case) at 2 Amps that is in the series part of the circuit where battery A and B are being used to charge C (because A is in such poor shape). While running the circuit which uses a 12 volt DC motor (I think it was a automotive wiper motor which has 3 speeds - 3 different color positive wires) I found that if I put a second charger across battery B that battery B would suddenly lose a lot of voltage if I removed the charger after a couple minutes. Battery B is a strong battery but probably has 1 dead cell so voltage has remained around 10.5 to 11.5 volts or so even when running this circuit for a while with no charger on it. But after putting the charger on it at 10 Amps and then removing it the motor almost stops and that battery reads about 4 to 5 volts (which is lower than I've ever seen it). Then within maybe 15 to 30 seconds the motor speeds back up and the voltage across that battery returns to 10.5 to 11.5 volts or so. This process has been repeated several times with the same results.
Second strange effect: The battery 'B' increases in voltage slowly over just a few minutes even though it has no charger on it. Battery B and battery A are being used to charge battery C. Note that Battery A is weaker by far than B and is a lower voltage than B unless a charger is attached.
Third strange effect: If I have one charger on battery A and I then put a second charger on battery B by attaching the charger cables first but leaving the charger off there is no change in the motor speed (expected). When I turn on the charger the motor speed increases some (expected). But when I turn off the charger with the cables still attached the motor either stops or slows down so much it's almost at a stop. And when reading the voltage on battery B it drops to 4 or 5 volts. As mentioned above it will come back very quickly once I remove the charger cables.
I also tried putting a Bedini SSG on the two charging batteries so it would run off the B battery and charge the A battery while both A and B charge C. This greatly extended the time A and B would run the motor and charge C before the motor would slow down. In all tests battery C was taking a charge better and would have an ending voltage after a day of rest that was higher than any charging I did with a 10 Amp charger. I often ran the 10 Amp charger on a battery (not using this circuit) for several hours at a time. In nearly all cases it would be back down around 10 volts after a day of rest. But by just using the odd circuit with sometimes adding a 2 amp charger on one of the charging batteries the end result was a much better charge in a much shorter time.
Also somewhat interesting is that the main DC motor has a fair amount of torque but it is not turning anything other than it's own shaft. While I suspect it would not gain much to hook it up to a small generator since I'm sure that would cause it to draw a lot more current I considered that due to some of the odd behaviors I've seen in this circuit.
So is there a normal explanation for some of these oddities? I'm no EE but based on what I do know some of this seems odd. Is it possible the power that is being pulsed through the motor commutators in the battery C is getting some sort of radiant energy? When using some voltmeters on the AC setting I get a reading of around 25 volts AC across the C battery. I assume the meter is just reading pulsed DC.
My main purpose in trying this circuit has just been to somehow recover these 3 batteries. They all seem to benefit to an extent from the process as long as I have just one 2 amp charger on A or B. The C battery of course gets the greatest benefit and I've begun swapping them around to the C position to get the other 2 recovered also. I don't think there's any OU here at all but unless I'm missing something obvious there seems to be some unusual effects.
A couple other notes when you look at the circuit below. Both the motor negative and motor positive are hooked to positives of batteries. That is not a mistake in the circuit diagram. The way I see it the motor is running off the difference between A+B (about 24 volts) and C (12 volts). And that voltage is being pulsed into C through the motor commutators if I understood the other experimenter correctly.
However that's not the strange part at all. Bear with me please as this may take some explanation about a couple of the oddities I've found while charging them with the circuit below.
First odd effect: I often run a regular battery charger across a single battery (A in this case) at 2 Amps that is in the series part of the circuit where battery A and B are being used to charge C (because A is in such poor shape). While running the circuit which uses a 12 volt DC motor (I think it was a automotive wiper motor which has 3 speeds - 3 different color positive wires) I found that if I put a second charger across battery B that battery B would suddenly lose a lot of voltage if I removed the charger after a couple minutes. Battery B is a strong battery but probably has 1 dead cell so voltage has remained around 10.5 to 11.5 volts or so even when running this circuit for a while with no charger on it. But after putting the charger on it at 10 Amps and then removing it the motor almost stops and that battery reads about 4 to 5 volts (which is lower than I've ever seen it). Then within maybe 15 to 30 seconds the motor speeds back up and the voltage across that battery returns to 10.5 to 11.5 volts or so. This process has been repeated several times with the same results.
Second strange effect: The battery 'B' increases in voltage slowly over just a few minutes even though it has no charger on it. Battery B and battery A are being used to charge battery C. Note that Battery A is weaker by far than B and is a lower voltage than B unless a charger is attached.
Third strange effect: If I have one charger on battery A and I then put a second charger on battery B by attaching the charger cables first but leaving the charger off there is no change in the motor speed (expected). When I turn on the charger the motor speed increases some (expected). But when I turn off the charger with the cables still attached the motor either stops or slows down so much it's almost at a stop. And when reading the voltage on battery B it drops to 4 or 5 volts. As mentioned above it will come back very quickly once I remove the charger cables.
I also tried putting a Bedini SSG on the two charging batteries so it would run off the B battery and charge the A battery while both A and B charge C. This greatly extended the time A and B would run the motor and charge C before the motor would slow down. In all tests battery C was taking a charge better and would have an ending voltage after a day of rest that was higher than any charging I did with a 10 Amp charger. I often ran the 10 Amp charger on a battery (not using this circuit) for several hours at a time. In nearly all cases it would be back down around 10 volts after a day of rest. But by just using the odd circuit with sometimes adding a 2 amp charger on one of the charging batteries the end result was a much better charge in a much shorter time.
Also somewhat interesting is that the main DC motor has a fair amount of torque but it is not turning anything other than it's own shaft. While I suspect it would not gain much to hook it up to a small generator since I'm sure that would cause it to draw a lot more current I considered that due to some of the odd behaviors I've seen in this circuit.
So is there a normal explanation for some of these oddities? I'm no EE but based on what I do know some of this seems odd. Is it possible the power that is being pulsed through the motor commutators in the battery C is getting some sort of radiant energy? When using some voltmeters on the AC setting I get a reading of around 25 volts AC across the C battery. I assume the meter is just reading pulsed DC.
My main purpose in trying this circuit has just been to somehow recover these 3 batteries. They all seem to benefit to an extent from the process as long as I have just one 2 amp charger on A or B. The C battery of course gets the greatest benefit and I've begun swapping them around to the C position to get the other 2 recovered also. I don't think there's any OU here at all but unless I'm missing something obvious there seems to be some unusual effects.
A couple other notes when you look at the circuit below. Both the motor negative and motor positive are hooked to positives of batteries. That is not a mistake in the circuit diagram. The way I see it the motor is running off the difference between A+B (about 24 volts) and C (12 volts). And that voltage is being pulsed into C through the motor commutators if I understood the other experimenter correctly.
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