j greef wrote:
* In my case the load battery was charged very quickly but it seemed to have charged very little energy (since it discharged very fast when used as a source, some 30 x faster than the reference battery).
J Greef,
That is what I found as well. I have hooked up a 16V, 22000 farad capacitor. The voltage, as is with caps, is maxed out immediately, but it takes the current some time to fill up. My understanding is that batteries works much the same, however the voltage takes much slower than that of a cap.
Here is another test I am working on. First the theory.
The triggering magnet turns the original reed switch on for about 30 degrees of the 360. This leaves roughly 330 degrees where the current flow from the battery is cut. If the diode is removed and a cap is placed over the reed switch, it causes troubles when the switch is turned on. This is the reason for the diode. What if the diode can be bypassed while the battery is disconnected from the motor for that 330 odd degrees and used to flash charge the reference battery? The following configuration only uses 30 degrees of the 360 to flash charge.
The configuration is as follows.
Connect a capacitor where the load battery is, that is negative polarity on the black alligator clip and the positive side on the diode, which is connected to the red alligator clip. Use a cap with a voltage rating slightly higher than the reference battery and a very fast discharge curve. I use 16V 470uF. (My reference battery is 12V, series configuration of 8 used Alkaline C-cell batteries}
I have then connected another reed switch over the diode, and placed it on the opposite side (180 deg) of the original reed switch. Be careful at the placement of this switch, as the rotor magnet can trigger this switch and cause both switches to short out.
A further test is to increase the angle between the original switch and the diode switch such that to give the cap ample time to charge and similarly ample time to discharge. More switches could also be used to increase the discharge time.
I have not had time to do proper tests and measurements with this. One thing I have learned is that if the switches short out, remove all power sources and tap the switch with something. This will cause the blades to detach.
Let me know if this description is not clear, and I can try to rephrase or add a circuit diagram.
Regards
traveldan30