[Dr_C2]

   

Here is one of the mark1 prototype HPMs. Power flows along the red/black wires from the power supply to the HPM. The SSD squarewave AC signal then flows along the thicker yellow/green wires from the HPM to the track. The thinner yellow/green wires are used to sample the track packet signal from  the main powerbase (via an opto-isolator).

The photo dates back to May 2023 when trials commenced. In the trial shown in the photo a 10Amp bench-top powerbase was used rather than the Fusion 600W I mentioned earlier.

The prototype includes both an electronic current sense fuse (resettable) and an automotive blade type fuse as a final level of protection.

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