Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Magnetic saturation
Patent
1986-07-16
1988-05-03
Eisenzopf, Reinhard J.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Magnetic saturation
315 35, 324105, G01R 3124, G01R 1904
Patent
active
047422947
ABSTRACT:
A magnetic sensor for measuring the helix current of a traveling wave tube (TWT). The sensor includes a helix current sense inductor and a reference inductor. The sense inductor includes windings for receiving the cathode and collector currents of the TWT and for receiving a bias current, and also a sense winding. The cathode and collector currents cause permeability of the core to vary in proportion to the difference between those currents, which is equal to the helix current. The bias current is supplied to the bias winding to compensate the sense inductor for temperature-related permeability variations. The bias current is supplied by the reference inductor which is selected to have magnetic properties which match those of the sense inductor. A plurality of sense inductors in conjunction with one common reference inductor may be used for sensing the respective helix currents in the TWTs in a multi-TWT array.
REFERENCES:
patent: 1511595 (1924-10-01), Fahy
patent: 1882773 (1932-10-01), Callsen
patent: 3750010 (1973-07-01), Abnett et al.
patent: 3936732 (1976-02-01), Modiano
patent: 4050013 (1977-09-01), Maddox
patent: 4266190 (1981-05-01), Lipman
patent: 4274051 (1981-06-01), Condon
patent: 4280162 (1981-07-01), Tanka et al.
patent: 4475078 (1984-10-01), Itani
patent: 4482862 (1984-11-01), Leehey
patent: 4529931 (1985-07-01), Kuhns
patent: 4558310 (1985-12-01), McAllise
"The Zero-Flux DC Current Transformer, A High Precision Bipolar Wide-Band Measuring Device", by Appelo et al., IEEE Trans. on Nuc. Sci., pp. 1810-1811, NS-24, #3, 6177.
Burns W.
Eisenzopf Reinhard J.
Venus Scientific Inc.
LandOfFree
Helix current sense system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Helix current sense system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Helix current sense system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1508776