I brought this incredible EMI debugging tool before quarantine for my company R&D lab usage. This is extremely useful for EMI troubleshooting and to localize the weak area.
I suspect that this is working under the principle of Jim Williams, Avalanche Pulse generator circuit. Unfortunately I can't cut open the enclosure to see the internal circuit, because this is belongs to our company.
I can see one IC chip (10 or 14 pin) and few inductors through the battery insertion back hole. Can't able to see the IC part number.
We had lot of struggles to troubleshoot the signal line surge & EFT problems earlier, but now this tiny marker shape tool helps to find the weak areas with in few second (yes in seconds, not even minutes).
Earlier we used microchip microcontroller for our products, but we changed to Cypress and ST ARM controller for better pricing and we totally eliminated all the use of microchip microcontrollers.
Do you know, after started to use this tool I immediately found that the Microchip is the only best performing controller (among the three brand I have mentioned) for harsh environment. I realized most of my EMI problem is only due to my ST and Cypress microcontroller and no problem with my protection circuits. I verified by just replacing the microcontroller alone from ST to microchip and the entire project clears the surge test for 4KV. Earlier it fails at 1.75KV with ST ARM.
(FYI, we have 100% inhouse test facility for ESD, surge, EFT, voltage dip & drops, pulse magnetic field, CE & CS, vibration, thermal shock, etc..., So I can clearly verify and compare the test result of this EMI debugging tool with accredited Lab test equipment. Trust me this is one of the best tool I have ever used and it cost me 1,500 EUR)
So I'm designing an avalanche pulse generator for to clear my doubt. I can accept any suggestions or advises from this forum.
This tool has polarity chancing and single or burst mode output option(I hope that the single mode is to simulate the surge and burst mode for EFT) which is not available at avalanche pulse generator. But I'm always using the burst and positive polarity option for troubleshooting.
Udhay