Hi Dave,
Nice to see you having a more consistant result.
I had the bright idea the other day to pull apart an UPS that had been
sitting here for the past ten years. ( I'm a hoarder, just can't help myself).
The two 12v 7Ah batteries seem to be good candidates for the bad battery.
They hold around 0.5v unloaded but loaded, drop directly to 0.
Using two other 12v 7Ah primary batteries, along with the MY016, my setup
shows primary battery voltage across the dead battey and will not startup
the motor.
Placeing a 5 watt lamp across the battery 3, we read around 17v at battery 3
and the spins. Removing the lamp, the motor stops and battery 3 voltage
rises to primary voltage.
I have tried an inductor is series but get no difference.
Wish I could get the primary bouncing voltage like you have.
Persist and hopefully the effect can be made to maintain.
p.s. Ampmeters in series show 0mA till the 5w lamp is connected. this
then rises to 400mA.
Penno
to
Nice to see you having a more consistant result.
I had the bright idea the other day to pull apart an UPS that had been
sitting here for the past ten years. ( I'm a hoarder, just can't help myself).
The two 12v 7Ah batteries seem to be good candidates for the bad battery.
They hold around 0.5v unloaded but loaded, drop directly to 0.
Using two other 12v 7Ah primary batteries, along with the MY016, my setup
shows primary battery voltage across the dead battey and will not startup
the motor.
Placeing a 5 watt lamp across the battery 3, we read around 17v at battery 3
and the spins. Removing the lamp, the motor stops and battery 3 voltage
rises to primary voltage.
I have tried an inductor is series but get no difference.
Wish I could get the primary bouncing voltage like you have.
Persist and hopefully the effect can be made to maintain.
p.s. Ampmeters in series show 0mA till the 5w lamp is connected. this
then rises to 400mA.
Penno
to
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