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Re: Measuring NST current
Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-uswest-dot-net>" <evp-at-pacbell-dot-net>
Tesla list wrote:
> Original poster: "davep by way of Terry Fritz <twftesla-at-uswest-dot-net>"
> Tesla list wrote:
> > Original poster: "Terry Fritz" <twftesla-at-uswest-dot-net>
> > Hi David,
> > It can be done but you have to be really careful! The voltage
> across the
> > meter is low and about near ground but if anything goes wrong at all the
> > meter will get fried. You have to carefully make sure the meter and leads
> > are in the 400mA current range. The meter has to be well insulated from
> > everything else. if the fuse in the meter blows (or was already blown), it
> > will fry.
> Sounds good to me. If accessible, putting a bypass on the
> fuse might help. Also, with a bit of digging, one can come
> up with ac milliameters for under $5 (ham radio fleas, notably...)
> Toasting one of thosei less likely and a LOT more affordable..
A DC ammeter/milliameter will also work if connected to the output of a
full-wave bridge rectifier (dirt cheap) and calibrated with your DVM.