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Unknown pricing at this time, that one uses many Zeners and each one has to be hand selected and measured and?the? PCB is larger to.. But not a fortune for sure, When using this scheme I suggest controlling it using Dr. Prutchi's idea of a DPDT switch, using the extra set of contacts to light an alerting LED to remind you the HV is set to HI. You could also wire it to 2 LEDs of different color (RED/YELLOW) to indicate the? ?HIGH HV/ LOW? HV setting.? There is also a LENi conversion mod I designed that allows knob control of the HV over a range of 200-1000V- Used on ENi only but might be adapted to others, I never tried. Geo From: "MT" <mtcooper01@...> To: "GEOelectronics" <[email protected]> Sent: Thursday, June 4, 2020 9:05:21 PM Subject: Re: [GEOelectronics] High Voltage Zener Reregulator Ok I think I understand.? There is some flexibility with it.? ? That switchable HV sounds really cool.?? How much are asking for it? ? Thanks Michael C ? From: [email protected] <[email protected]>
On Behalf Of GEOelectronics@... ? Hi MTC. This one is designed to go from the regular probe jack (RED WIRE= 900 V input) to a different jack for the 440V probe (ORANGE WIRE) yes the loop goes to ground (same ground for both connectors). ? It can be wired in the same housing as the main probe by using 2 BNC connectors, but don't try to hook up both probes at once- or it can be mounted in a box by itself with input and output connectors, or it can be wired into the probe housing itself (as in the GEO-310/ Pikes Peak Prospector). ? Ask if questions. I don't recommend switches in the HV line, can lead to real problems. FOR YOUR FUTURE CONVERSIONS- I HAVE A SPECIAL MAIN HV ZENR STRING THAT ALLOWS 2 DIFFERENT HV'S TO BE SWITCH SELECTED- THESE ARE USUALLY 900 AND 440 OR 470 BUT CAN ALSO BE 700. NOT ADVERTISED YET, SPECIAL ORDER ITEM RIGHT NOW. ? George? ? ----- Original Message ----- ? hi,
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