Anyone have some specs on NH1702GA transformer??

[lamare]

Hi all,

Andrija Puharich talks about an "isolating transformer" in some of his patents:

METHOD AND APPARATUS FOR HEARING BY BIODETECTION AND BIOTRANSDUCTION OF RADIOFREQUENCY ENERGY - Patent 3586791
METHOD AND APPARATUS FOR IMPROVING NEURAL PERFORMANCE IN HUMAN SUBJECTS BY ELECTROTHERAPY - Patent 3563246

In the patent text, he says "which suitably may be an NH1702GA".

I have googled for this but was unable to find anything on this type of transformer.

Can someone tell me anything about these transformers?

[adam_mizer]

Lamare, I tried a little searching.
Somehow you have to figure the manufacture from the part number.
Here is a link to some transformer catalogues including older ones.
Antique Transformer and Parts Catalogs and Specifications

A lot of searching is needed!

[SeaMonkey]

Since the RF employed in the devices is within the range of
6 KHz to 200 KHz it would be possible to use hand made
ferrite core (toroid) transformers. Select a ferrite material
appropriate for that frequency range or portion thereof.

The RF power requirement is not very high so a small toroid
would be adequate.

[lamare]

Lamare, I tried a little searching.
Somehow you have to figure the manufacture from the part number.
Here is a link to some transformer catalogues including older ones.
Antique Transformer and Parts Catalogs and Specifications

A lot of searching is needed!

Thanks for the link. Hopefully I can find it there.

[lamare]

Since the RF employed in the devices is within the range of
6 KHz to 200 KHz it would be possible to use hand made
ferrite core (toroid) transformers. Select a ferrite material
appropriate for that frequency range or portion thereof.

The RF power requirement is not very high so a small toroid
would be adequate.

I am mostly interested in the turns ratio Puharich used. It may be 1:1, but it may also be a step up transformer. At the moment I don't worry too much about the actual implementation, because I am working with a simulator to try and understand the principles behind this stuff.

I am progressing pretty good. I now designed a circuit that uses a modulated exciter to drive two load coils into resonance using some variation of the AV plugs used by Stiffler, even though I still have to close the actual feedback loop:
http://www.energeticforum.com/renewa...tml#post114287