Graham Gunderson's Energy conference presentation Most impressive and mysterious

[Spokane1]

@Spokane1:
Yes, I've done a bit of TTL design. I may be able to figure out the unknown chip if you can provide an actual schematic. No way I can do it from just looking at the photo of the breadboard.

Dear TK,

Thanks for the offer. I kind of thought that you up might be up on this sort of stuff. I didn't expect you to derive it from the photo. I'm going to draft it up and then we could have evaluated it. However, upon a further examination I found the right number it was a TS556. Now all of the IC's are identified. The next challenge is attempting to figure out what he was doing for his +5 volt regulator. I thought it was a 7805 and a transistor, but the connections don't make sense. Maybe you can take a stab at this from the photo.

Spokane1

[Spokane1]

(One wonders why he doesn't just ask Gunderson what the chip is ...      )

Dear TK,

On the Monday after the convention I phoned up Graham and asked for a list of the components that I was intending to order as to get a head start on this replication. That is when he dropped the bomb on me that he had changed his mind on the Open Source Idea. He didn't tell me what the part numbers were and instead describe his personal reasons for changing his mind. I left it there.

I'm not going to ask him again. 

We have what we have with his permission. I know its way less than what everybody here wants, especially since I made the OU claims (Not Graham).

This is not the best circumstance to do a peer review of a potential breakthrough technology, but its a great opportunity for us builders to dig into new dreams.

Spokane1

[k4zep]

Dear TK,

Thanks for the offer. I kind of thought that you up might be up on this sort of stuff. I didn't expect you to derive it from the photo. I'm going to draft it up and then we could have evaluated it. However, upon a further examination I found the right number it was a TS556. Now all of the IC's are identified. The next challenge is attempting to figure out what he was doing for his +5 volt regulator. I thought it was a 7805 and a transistor, but the connections don't make sense. Maybe you can take a stab at this from the photo.

Spokane1

Evening Spokane1,

Looks to me like a 7805 regulator boot straped with another transistor for further current capability, hence heatsink.  See:https://www.google.com/search?q=7805+regulator+with+bootstrap+higher+current+transistor&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjV-v_muI_OAhUFJx4KHZIlApEQ_AUICCgB&biw=1280&bih=656
and select images and a whole possie of schematics there.  It could be a voltage regulator or a constant current source, probably a voltage regulator.
Choose the circuit that matches what you got.  Is it possible the +12VDC feed for it is coming from the output board?

Ben
K4ZEP

[k4zep]

Dear TK,

On the Monday after the convention I phoned up Graham and asked for a list of the components that I was intending to order as to get a head start on this replication. That is when he dropped the bomb on me that he had changed his mind on the Open Source Idea. He didn't tell me what the part numbers were and instead describe his personal reasons for changing his mind. I left it there.

I'm not going to ask him again. 

We have what we have with his permission. I know its way less than what everybody here wants, especially since I made the OU claims (Not Graham).

This is not the best circumstance to do a peer review of a potential breakthrough technology, but its a great opportunity for us builders to dig into new dreams.

Spokane1

Hi Spokane1

We have worked with a lot less!!!!!!!  Up and attum.

Ben K4ZEP

[Spokane1]

For those of you wanting to focus on the H-Bridge here is a quick close up of the gate driver circuits.