Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With permanent magnet
Patent
1980-10-08
1983-05-31
Nelms, David C.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
With permanent magnet
324137, G01R 116
Patent
active
043863167
ABSTRACT:
A brake magnet for watt-hour meters using permanent magnet material of low permeability of nearly one and high coercive strength in which exact temperature compensation for a required temperature range can be achieved and which is easily manufactured. The temperature compensation elements are positioned on the surfaces of the brake magnet system away from the air gap.
REFERENCES:
patent: 2309414 (1943-01-01), Nobbs
patent: 3413550 (1968-11-01), Wright
patent: 3588768 (1971-06-01), Baermann
patent: 4238729 (1980-12-01), MacFadden et al.
patent: 4238730 (1980-12-01), Konashinsky et al.
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