Operating a transformer on DC

[vedat]

@mbrownn, firstly you have to understand that you値l never be able to get DC voltage directly from a transformer. What you値l get is alternating current and you値l have to use a full-wave bridge rectifier to convert it to DC. I don稚 usually recommend half wave rectifier since it is not that much energy efficient. You can give pulsed signals at the input of the transformer but you値l still get AC at the output which has to be rectified to get DC voltage.

[mbrownn]

@mbrownn, firstly you have to understand that you値l never be able to get DC voltage directly from a transformer. What you値l get is alternating current and you値l have to use a full-wave bridge rectifier to convert it to DC. I don稚 usually recommend half wave rectifier since it is not that much energy efficient. You can give pulsed signals at the input of the transformer but you値l still get AC at the output which has to be rectified to get DC voltage.

The problem is I have AC and DC occurring in the same coil at the same time.

Imagine I have 12vDC generated in a coil, now through a transformer action there is also 12v AC generated in the same coil at the same time. The result is a wave that varies between 24v and 0v with the average still being only 12vDC. It does not matter if I use a diode or a bridge rectifier I still get a wave of average 12v DC. Effectively the AC cancels itself out.

It does seem that there are 3 ways that I can approach the problem.

1) oppose the negative half of the wave with a positive voltage signal. This way I can harvest the positive half of the wave. As the voltage is double (24v), I may get double the current flow and so all the power available in the AC but this has to be tested.

2) It may be possible to magnetically block the negative half of the wave with the same effective results as solution 1

3) It may be possible to split the flux paths so that the positive half appears in the generator coil and the negative half appears elsewhere in the magnetic circuit. This way I would get the same as 1 and 2, but would also be able to harvest the negative half of the wave.

It has been proven that method 1 will work, but it is not known if I will get the current increase, so now I have to test all three methods and see how effectively it can be done in reality. We are in the process of building test rigs to observe the results.

The design of the machine does indeed have two flux paths, so possibility 3 may be what happens in reality, or maybe a combination of the above solutions.

[shylo]

any updates?

Hi mbrownn, I was just curious how things are going?
I can't say I fully understand the info here, but was exp. with a transformer.
I was running my failed attempt of a UFO motor but feeding it through one side of a transformer , on the other side the AC readings were off the scale, and it is real because the shock I received was like touching an electric fence.
Looking forward to any updates.
artv