Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Plural active motor elements
Patent
1992-08-28
1994-09-13
Strecker, Gerard R.
Electricity: measuring and testing
Measuring, testing, or sensing electricity, per se
Plural active motor elements
324144, 324166, G01R 514, G01R 700, G01R 120, G01P 3481
Patent
active
053472136
ABSTRACT:
An air core gauge method and apparatus are disclosed. The apparatus receives an input signal and comprises a gauge device and driver circuit for driving the gauge device. A detection circuit detects transitions in the input signal and provides a control output in response to detected transitions. A power control circuit, responsive to the control output, provides a 100% duty cycle power signal to the driver circuit during detected transitions and otherwise provides a power signal with a duty cycle less than 100% to the driver circuit so that the average power consumed by the gauge is reduced and the operating temperature of the gauge is reduced.
REFERENCES:
patent: 4291268 (1981-09-01), Okuyama
patent: 4383444 (1983-05-01), Beaman et al.
patent: 4386406 (1983-05-01), Igarashi et al.
patent: 4441157 (1984-04-01), Gerchman et al.
patent: 4827209 (1989-05-01), Tanaka et al.
patent: 4841238 (1989-06-01), Birch
patent: 4924178 (1990-05-01), Miyajima
Guest James W.
Johnston William J.
Richardson James D.
Delco Electronics Corp.
Funke Jimmy L.
Simon Anthony L.
Strecker Gerard R.
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