The Ossie motor

[mscoffman]

and the battery is always at 4.11 volts and the supercap voltage at 5. 84volts (climbing)

much above the nominal rated voltage of 5.4 volts

Laurent

@All

Don't try this at home...Normal capacitors have zero tolerance
for voltages above their published working voltage. Not 10%
but zero V above their WVDC. Their dielectrics punch through
and they become electrically leaky. They start to conduct dc
current then heat up. Generally, capacitors don't fail in some
friendly manner either. Supercaps, I don't know. Your PMM
is going to need some crowbar circuit protection against
capacitor overvoltage. It's definitely not a "Put it somewhere
running and forget about it" sort of thing.

:S:MarkSCoffman

[Jimboot]

@All

Don't try this at home...Normal capacitors have zero tolerance
for voltages above their published working voltage. Not 10%
but zero V above their WVDC. Their dielectrics punch through
and they become electrically leaky. They start to conduct dc
current then heat up. Generally, capacitors don't fail in some
friendly manner either. Supercaps, I don't know. Your PMM
is going to need some crowbar circuit protection against
capacitor overvoltage. It's definitely not a "Put it somewhere
running and forget about it" sort of thing.

:S:MarkSCoffman

Uhoh - @woopy has gone to bed.

[captainpecan]

@woopy,
Great setup, and great work!
BUT....
Not a good choice to leave it running to overcharge those caps.  Mscoffman is 100% correct here guys, this is not a set it and leave it situation.  Woopy, your committing a form of circuit suicide here, lol.  If you are not awaken by a similar sound to a gun shot when a capacitor explodes, then you may want to check all your components for damage.  I do not recall your exact circuit setup, but at the very least if one of those caps fails, you no longer have a recovery circuit running so you most likely have been pounding your components with high voltage if the motor continues to run.  Sorry man, sometimes we learn lessons the hard way.  Good luck!

[captainpecan]

On a good note, I'm excited!  I have been digging really deep and hard to find me an oscilloscope to order.  I finally found one and it's on its way!  It's a pretty good, old scope.  Tektronix 50MHZ 2 channel, and I got it for $60 after shipping!!!  It was from a seller that did not know how to use it or even really what it was.  I instructed him how to run a couple tests and he sent me pictures of it, so I know it is in good working condition!  I can finally see what my circuit's are doing pretty soon when it comes in and stop guessing, lol... Now I can get back to work on my projects!  Hopefully I'll have some more data to post soon.

[Jimboot]

On a good note, I'm excited!  I have been digging really deep and hard to find me an oscilloscope to order.  I finally found one and it's on its way!  It's a pretty good, old scope.  Tektronix 50MHZ 2 channel, and I got it for $60 after shipping!!!  It was from a seller that did not know how to use it or even really what it was.  I instructed him how to run a couple tests and he sent me pictures of it, so I know it is in good working condition!  I can finally see what my circuit's are doing pretty soon when it comes in and stop guessing, lol... Now I can get back to work on my projects!  Hopefully I'll have some more data to post soon.

Congrats CP. Looking forward to learning heaps from your scope shots. I'm trying a motor out of a recharable torch. Don't really want to resort to gearing up. See how we go. edit: Got into trouble from the Grandkids for pulling apart their fave torch. 3&7 yo just don't get the whole overunity thing.