Thread: Bedini SG
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Old 09-13-2007, 07:14 PM
Ted Ewert Ted Ewert is offline
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Join Date: Apr 2007
Location: SF Bay Area
Posts: 597
Hi Shamus,
That diode does indeed pass current (and the more the better! :-). Think of it as a compression diode.
When the transistor first turns on, the current from the battery is temporarily attenuated by the coil. Current will not flow until the magnetic field is built up around the coil.
Consequently, when the transistor turns off, that field collapses and produces a high positive voltage right where the cathode of that diode is. If this voltage is not bled off, it will increase on subsequent cycles and blow up your transistor in many cases.
It is this energy that is extracted buy the interaction of the magnet, coil and pulses that charges the battery so well.
Voltage alone won't charge these batteries. They need a combination of high voltage and low impedance in short duration pulses.
Note on batteries:
Batteries take a while to become conditioned. Don't get discouraged if they don't work so great even through the first 10 or even 20 cycles. It usually doesn't take that long, but there are different types of batteries, sizes and chargers that make this an inexact science at best.
None of the Bedini machines work that well on unconditioned batteries. That's one of the reasons I think people get discouraged. It also takes a while to get used to how the machines work.
The SSG is an awesome machine for learning about this technology. The more you fool around with it and experiment, the more you will learn. It is a very simple machine electrically, but it embodies all the concepts Bedini has worked so many years to discover.
It's all there for those who are patient and persistent. It just takes a while to learn.

Ted
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