Fusing the Big One . . .
Hi Albert,
You have a way at asking the most challenging questions . . . like,
'How in the Heck DO I plan on fusing the 10 coiler?' I have thought a
lot about the issue and I'm not thrilled with the prospects. The challenge
is in correctly matching current draw when so many things can influence
what the 10-coiler pulls from the supply - and then there is the nasty
prospect of having an open circuit show up in the load, leading to a basket
of toasted MJLs and no upstream device like a fuse or circuit breaker is
going to even sense that condition and react to it fast enough IMHO (and, neon lamps can fail, too). Seems to be a real conundrum.
One needs the protection especially early in the learning when you are most vulnerable and, paradoxically, you don't have enough information to even correctly size the safety devices.
As for measurements on the charging output from the 10-coiler (as in all
SSG variants) digital is problematic and even analog can affect the proper
functioning of the machine, depending on how the sensing is accomplished.
One technique I have used with some modest success to measure current flow and galvanically isolate some current signals from my digital instruments including microcomputer-based, home-brew boards is a nifty little Hall-Effect prototype board made by Allegro Micro. This device receives 12 VDC excitation from (for example) an Omega Instruments Digital Panel Meter (DPM) and retransmits a scaled, isolated analog signal proportional to the current that the Hall-Effect sensor 'sees' via magnetic coupling. The 0-5 VDC signal can be displayed on the DPM and/or routed through an isolation amplifier to any one of my microcomputer-based systems. Allegro's hall effect protoboards nominally handle 5 amp and 20 amp current ranges, depending on the HEff-chip as mounted on the protoboard ( at $25 or so for samples of these it is hard to beat the price and Allegro's packaging is experimenter friendly, too).
I mention the use of Hall Effect devices like the Allegro Micro device to open and discuss the possibilities of using more passive devices (like HEff) for machine minder functions hopefully without introducing spurious loads, loops, and non-linear effects that are or could be self-defeating especially in working with Bedini's machines. If we could take data without negating the performance of the machines then we could also develop digital-based safety interlocks, among other things.
Of course, what you've just read are the deranged ramblings of a very tired drone that has several fingers full of splinters
- all in the pursuit of a solid pine-paneled (no cheap imitation veneer for me) comfy home for the 10-coiler and its associated sub-assemblies.
The shell of the building is steel and it is well grounded and that is a stretch considering the limestone cap, flint, and 'topsoil' here in Texas that can only grow rocks. My neighbor next door just lost most of his household electronics due to a really close lightning strike. Guess who's house was not properly grounded . . .
Anyway, the interior of the lab including the workbenches are all wood, all inside a Faraday cage. I hope it all works out- including interlocks.
Albert, thanks for your insightful posts . . .
Cheers,
Plazma
Hi Albert,
You have a way at asking the most challenging questions . . . like,
'How in the Heck DO I plan on fusing the 10 coiler?' I have thought a
lot about the issue and I'm not thrilled with the prospects. The challenge
is in correctly matching current draw when so many things can influence
what the 10-coiler pulls from the supply - and then there is the nasty
prospect of having an open circuit show up in the load, leading to a basket
of toasted MJLs and no upstream device like a fuse or circuit breaker is
going to even sense that condition and react to it fast enough IMHO (and, neon lamps can fail, too). Seems to be a real conundrum.
One needs the protection especially early in the learning when you are most vulnerable and, paradoxically, you don't have enough information to even correctly size the safety devices.

As for measurements on the charging output from the 10-coiler (as in all
SSG variants) digital is problematic and even analog can affect the proper
functioning of the machine, depending on how the sensing is accomplished.
One technique I have used with some modest success to measure current flow and galvanically isolate some current signals from my digital instruments including microcomputer-based, home-brew boards is a nifty little Hall-Effect prototype board made by Allegro Micro. This device receives 12 VDC excitation from (for example) an Omega Instruments Digital Panel Meter (DPM) and retransmits a scaled, isolated analog signal proportional to the current that the Hall-Effect sensor 'sees' via magnetic coupling. The 0-5 VDC signal can be displayed on the DPM and/or routed through an isolation amplifier to any one of my microcomputer-based systems. Allegro's hall effect protoboards nominally handle 5 amp and 20 amp current ranges, depending on the HEff-chip as mounted on the protoboard ( at $25 or so for samples of these it is hard to beat the price and Allegro's packaging is experimenter friendly, too).
I mention the use of Hall Effect devices like the Allegro Micro device to open and discuss the possibilities of using more passive devices (like HEff) for machine minder functions hopefully without introducing spurious loads, loops, and non-linear effects that are or could be self-defeating especially in working with Bedini's machines. If we could take data without negating the performance of the machines then we could also develop digital-based safety interlocks, among other things.
Of course, what you've just read are the deranged ramblings of a very tired drone that has several fingers full of splinters

The shell of the building is steel and it is well grounded and that is a stretch considering the limestone cap, flint, and 'topsoil' here in Texas that can only grow rocks. My neighbor next door just lost most of his household electronics due to a really close lightning strike. Guess who's house was not properly grounded . . .
Anyway, the interior of the lab including the workbenches are all wood, all inside a Faraday cage. I hope it all works out- including interlocks.
Albert, thanks for your insightful posts . . .
Cheers,
Plazma
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