Greetings Gentleman,
Accomplished the first test run of the booster circuit with a 6 watt dc bulb load. The basic arrangement used 3 NAPA Tractor Batteries (one turned out to be way weaker) and adjusted the converter to a stable voltage that allowed for a 1 hour test run.
Measured the amperage between batteries position 1 and 2 along with amps between 1 and booster converter using externally powered Hall type amp sensors.
Mucked around a bit for a stable system and decided to use a booster voltage of 13.64v where the weaker battery worked fine. Not perfect but a good start.
Time B1 B2 B3 Boost A1 A2
Start 12.70 12.85 12.52 13.64 0.0 0.0
6:53 12.20 12.51 13.31 13.64 0.64 0.65
7:11 12.20 12.51 13.46 13.64 0.63 0.74
7:31 12.18 12.51 13.68 13.64 0.65 0.70
7:53 12.15 12.51 13.94 13.64
Resting voltage after 1 hour - B1 12.50, B2 12.77, B3 12.78
Discharge B3 (Charge Battery) down to 12.20 volts with 8 watt load for 1:21 hrs and rest B3 for 3 hrs with final voltage at 12.52 - same as starting point. Ah value is not an accurate reflection due to initial setup time
As an end test cross check on the amperage draw used an 8 watt bulb on B1 and B2 for several minutes to stabilize voltage. B2 at 12.51v and B1 at 12.17v - close to both test end run volts. Rest voltages returned to above noted values.
Attached are test assembly pic and .pdf's of real time amps at noted data times - quality not great here but will correct.
Happy 4th,
Yaro
3BS 1.pdf



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