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Single coil Bedini motor charging 4 batteries w no current increase

When I built my first Bedini motor many years ago I was charging up 5 different batteries on the single coil machine and a single transistor. I used a diode from the collector for each battery. I did not have meters and gauges at that time so I never tested it out. But it worked.

 

Through the years all I ever used it for was to restore lead acid batteries with good success.

 

Recently I got my electronics lab set up and am running experiments I have long dreamt of. I am working with the Bedini motor to see what it can really do besides restoring batteries. The other day I was experimenting with capacitors and LEDs in series with the output charging battery and got some interesting results. I can light up 19 LED light bulbs with no problem. When I connected the capacitor I got some very high voltage spikes which would ruin the transistor if I left it running.

 

Now I want to see what happens to the input current if I connect multiple batteries to the output at the same time. I have the primary output connected to two old 216 Ah golf cart batteries.

Below is the circuit I have been using. This is the basic Bedini SSG (Simplified School Girl) motor. The only difference in my circuit is I am using a 2N 3055 transistor instead of the MJL21194 although the one shown below performs better but it cost more at the time I built this device.

 

Bedini SSG motor circuit I am using

Bedini SSG motor circuit I am using

 

Next I ran another diode from the collector of the transistor and connected that to a pair of 12 volt 7 Ah batteries. They started to charge up happily.

 

The input current remained at just under 100 mA the whole time. I was using a digital volt and amp meter and it was fluctuating a lot but I could get an average of about 1 watt of power being used no matter what I put on the output of the Bedini motor.

 

See the diagram below. The red dot is where I connected the extra diode.

 

The red dot on the above diagram is where I put the extra diode

The red dot on the above diagram is where I put the extra diode

 

Next I connected the extra set of batteries with the positive of the batteries tied to the diode and the negative of the batteries tied into the negative of the first set of charging batteries. Please refer to the diagram below for more details.

 

Bedini SSG circuit with extra diode and second set of batteries

 

Bedini SSG circuit with extra diode and second set of batteries

 

In the circuit shown above I simply added the diode at the point shown in red. The circuit remained the same except for the addition of the new charging output which is outlined in red. The "N.C." means no connection. The red wire shows the wire leading to a new diode and charge battery set.

 

I figure that I can continue to add batteries and diodes like this to infinity. There is no change on the motor speed or the input current. The motor seems to be in tune with the larger 216 Ah golf cart batteries because the new batteries do not have any effect on the system.

 

I am going to try adding even more batteries later with volt meters to monitor the outputs.

 

There is certainly something interesting going on here.

 

You can watch today's video here: Single Coil Bedini SSG Charging Multiple Batteries At One Time

 

While you are over there please subscribe to my YouTube channel and follow our daily videos as we strive to become self sufficient and off the grid on a budget.


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Troy Reid

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