Circuit setups for pulse motors

[tropes]

Hi Jason
A couple of questions; when you say"Everytime this happens there is some loss to the system.", do you mean there is a loss of electrons? is this a loss to the power source (battery)?
I have used http://www.ndt-ed.org/EducationResources/HighSchool/Electricity/electricalcurrent.htm
as an information source. It's pretty basic but so am I.
Rather than a free lunch I would be happy with a cheap lunch.
Peter

[Thaelin]

@ tropes:
   Go and get some neon indicator lamps and wire them accross the emitter and collector of your transistors. If the voltage goes greater than the rated, the neon fires and protects the tranny. If you have a capture circuit in place the neon will do nothing but is there in case something goes wrong and you wind up with an open. I am currently using the resisted version from RS and they work just fine. Just use transistors rated over 150v.
@ All:
   Hall sensors are very sensitive and fry easy. I have used reeds and inductive pickup coils. Small reeds can fry as well if you let too much current flow to the base. I just found some rated at 1 am 50v dc that I think will do great. Might want to consider them. But then in time, the fast switching will beat them to an early grave too.

thaelin

[Paul-R]

Yes, I am getting 13-14 volt readings between collector and emitter with 18volt input. Is this " flyback voltage" ?
I have two capacitors; 16000uf, 60 vdc. I will hook one up and see how long it takes to fill it to 36volts.
Peter

Do you mean the back emf from the collapsing coil voltage?
I thought that these spikes were massive - short duration,
but very high voltage.
Paul.

[Nastrand2000]

Peter,
I don't believe electrons are lost, the conversion from wave to particle gives off an electromagnetic wavelength that is 600 to 800 nanometers which corresponds to the infrared spectrum. It gives off heat for every transfer of photonic wave, this is the loss I am referring to. I can go into more detail if it is needed.
Here is the latest video http://www.youtube.com/watch?v=B_1OVABZMrM&mode=user&search=
Jason

[Nastrand2000]

Oh and by the way my transistor for this motor runs dead cold.
Jason