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Hello Group,
After purchasing the SSG Handbook and building an energizer like John's and having it run right off the bat. I drug out an older non working SSG unit with an 8 filler coil but only running 5 transistors. I found that one of the transistors was shorted causing the machine to draw 2 amps and not rotate.
After removing the bad transistor and getting the energizer to run again I wanted to try charging 2 batteries using the branch current of 2 transistors going to 1 battery and 2 going to another. My wheel is a wooden one with (I believe 12 sets of double stacked magnets) not superpole configured, but just double stacked with North facing out. This is not a fantastic build, but a usable one for just exploring. Here is what happened with my first run and a explination of my setup.
I'm using the run battery (tractor battery 225CCA) that is charged when nessesary with my RC-2A12-12V, which is fed through my WATTS UP Meter to the energizer and it was setting at 12.38 volts at this time, this is the same battery that I run my new build with.
My charging batteries are 2 identical 5Ah motorcycle batteries purchased at the same time and same lot numbers. One has been converted to Alum and the other is still lead acid.
Here is their resting voltages after a 250Ma discharge cycle with the CBA III: Alum - 8.46v Lead Acid 12.72v
I was doing an 8 hour chagre cycle (while sleeping after a midnight shift), just trying to condition these batteries.
After checking a couple of times before actually getting to bed and once after getting up when I terminated the charge these are the results:
Alum Lead Acid
Chg Batt 1 Run Batt Chg Batt 2
Start Voltage: 8.46v 12.38v 12.72v
Check 1: 9.36v 12.46v 12.91v
Check 2: 15.92v 12.37v 13.82v
Check 3: 16.30v 12.31v 16.16v
My first question is: Is it even possible for the run battery to go up a little bit in charge when a load is pulling 850mA from it as the case with the 12.46 reading, check 2 above was done about 30 minutes into the run and check 3 was done right before termination of the charge cycle.
Now the other thing that is hard for me to believe is that the run battery was at 12.31 from 12.38 a loss of only .07 volts after what amounted to an 8 hour run at 850 mA draw, is that possible? I took the reading before terminating the charge cycle, so that was not a recovery voltage.
It's at least good to know that I can charge 2 for 1 input, now to load test and see if there really is any working energy in these batteries.
John K, I lost track of your 4 for 1 test, I think you terminated it due to bad batteries, if so, have you tried a different test simular to it yet?
Thanks for any input in this matter.
Tim
After purchasing the SSG Handbook and building an energizer like John's and having it run right off the bat. I drug out an older non working SSG unit with an 8 filler coil but only running 5 transistors. I found that one of the transistors was shorted causing the machine to draw 2 amps and not rotate.
After removing the bad transistor and getting the energizer to run again I wanted to try charging 2 batteries using the branch current of 2 transistors going to 1 battery and 2 going to another. My wheel is a wooden one with (I believe 12 sets of double stacked magnets) not superpole configured, but just double stacked with North facing out. This is not a fantastic build, but a usable one for just exploring. Here is what happened with my first run and a explination of my setup.
I'm using the run battery (tractor battery 225CCA) that is charged when nessesary with my RC-2A12-12V, which is fed through my WATTS UP Meter to the energizer and it was setting at 12.38 volts at this time, this is the same battery that I run my new build with.
My charging batteries are 2 identical 5Ah motorcycle batteries purchased at the same time and same lot numbers. One has been converted to Alum and the other is still lead acid.
Here is their resting voltages after a 250Ma discharge cycle with the CBA III: Alum - 8.46v Lead Acid 12.72v
I was doing an 8 hour chagre cycle (while sleeping after a midnight shift), just trying to condition these batteries.
After checking a couple of times before actually getting to bed and once after getting up when I terminated the charge these are the results:
Alum Lead Acid
Chg Batt 1 Run Batt Chg Batt 2
Start Voltage: 8.46v 12.38v 12.72v
Check 1: 9.36v 12.46v 12.91v
Check 2: 15.92v 12.37v 13.82v
Check 3: 16.30v 12.31v 16.16v
My first question is: Is it even possible for the run battery to go up a little bit in charge when a load is pulling 850mA from it as the case with the 12.46 reading, check 2 above was done about 30 minutes into the run and check 3 was done right before termination of the charge cycle.
Now the other thing that is hard for me to believe is that the run battery was at 12.31 from 12.38 a loss of only .07 volts after what amounted to an 8 hour run at 850 mA draw, is that possible? I took the reading before terminating the charge cycle, so that was not a recovery voltage.
It's at least good to know that I can charge 2 for 1 input, now to load test and see if there really is any working energy in these batteries.
John K, I lost track of your 4 for 1 test, I think you terminated it due to bad batteries, if so, have you tried a different test simular to it yet?
Thanks for any input in this matter.
Tim
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