| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 1 | High sensitivity dual function meter circuit | US107985 | 1979-12-28 | US4241448A | 1980-12-23 | Peter A. Kwitkowski |
| In a radio receiver or transmitter circuit, a high sensitivity dual function meter circuit for metering the DC and AC operation of a circuit stage is constructed by connecting a detector diode to a point in the source or emitter circuit of the metered stage rather than to ground. High sensitivity is obtained by passing both the DC and AC current through the detector diode so that a smaller AC voltage swing can be detected. | ||||||
| 2 | Low zero-offset transducer apparatus | US3602832D | 1969-06-12 | US3602832A | 1971-08-31 | RAYMOND WILLIAM R |
| Three-wire transducer apparatus for producing a low zero-offset output voltage while permitting high full scale operation. In a preferred circuit embodiment, a Zener diode is connected to the transducer''s amplifier output terminal, within an included feedback loop. The resistance of a variable resistor referred to a common reference potential is varied in accordance with the magnitude of the transducer output signal, while biasing the Zener diode to maintain breakdown.
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| 3 | Pneumatic tires | US63967657 | 1957-02-12 | US2884040A | 1959-04-28 | ROGER BOUSSU GABRIEL XAVIER; ANDRE NEUVILLE LOUIS PIERRE FR; NOEL SAINT-FRISON LOUIS HENRI |
| 4 | Arrangement for detecting measuring data in motor vehicles | US762109 | 1985-08-02 | US4730264A | 1988-03-08 | Rolf Kohler |
| An arrangement for detecting data in motor vehicles is disclosed especially in combination with the open or closed loop control of internal combustion engines. The arrangement includes at least one potentiometer as a data detector which permits, in at least one boundary region of the potentiometer band, the boundary values to be made to follow the measured value. Thus, a self-adjusting measuring arrangement is obtained which largely eliminates the need for manual fine adjustment. A flowchart discloses a computer-controlled realization of the invention. | ||||||
| 5 | Suppressed-zero electrical instrument | US59565056 | 1956-07-03 | US2958041A | 1960-10-25 | SCHAKE RICHARD P |
| 6 | Suppressed zero voltmeter | US74093958 | 1958-06-09 | US2947941A | 1960-08-02 | CORSON ALMON J; GUPTILL EDWIN C |
| 7 | Measured value detection method of automobile | JP15844585 | 1985-07-19 | JPH0833291B2 | 1996-03-29 | ロルフ・コーラー |
| 8 | Detector for measured value of automobile | JP15844585 | 1985-07-19 | JPS6145904A | 1986-03-06 | RORUFU KOORAA |
| 9 | Dispositif de réglage de zéro d'un appareil de mesure de courant continu | EP96401641.4 | 1996-07-23 | EP0766091A1 | 1997-04-02 | Arnoux, Axel; Piaud, Didier |
L'invention concerne un dispositif de réglage de zéro d'un appareil de mesure de courant continu. Cet appareil est du type comprenant, comme capteur (1), des cellules à effet Hall ou des éléments magnéto-résistifs fonctionnant en mesure directe ou en annulation de flux. L'appareil est caractérisé en ce qu'il comprend des moyens convertisseurs analogique-numériques (11) destiné à mesurer la tension de décalage en sortie (3) de la chaîne de mesure, une mémoire pour mémoriser le résultat de cette mesure, un dispositif de calcul (10) d'un signal de correction du décalage et un convertisseur numérique-analogique (13) dont la tension de sortie est envoyée à un amplificateur de mesure (2) monté dans la chaîne de mesure et adapté pour établir la somme algébrique du signal de mesure et du signal de correction de décalage. L'invention est utilisable pour des pinces ampèrimètriques. |
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| 10 | Voltage measuring apparatus | US66262 | 1979-08-13 | US4274050A | 1981-06-16 | Thomas F. Martin |
| A voltage dividing and reference circuit for creating a pseudoground from a unipolar power supply such that when used in combination with a digital voltmeter circuit a bipolar input signal can be measured for both polarities with respect to ground. | ||||||
| 11 | Solid state scale expanding circuit for electrical indicator devices | US586507 | 1975-06-12 | US4011504A | 1977-03-08 | Lawrence V. DePillo |
| A scale modifying circuit for providing either expanded or compressed scale readings on a conventional electrical indicating instrument. The device includes a pair of input terminals adapted to be connected to a source of voltage to be monitored or measured, a voltage responsive network connected with one of said input terminals for supplying output voltage to output terminals of the device, and amplifier means driven from the input terminals and having an output connected to supply a driving voltage to at least one of the output terminals. Expanded scales (or compressed scales) can be provided at the lower, middle, or high end of a particular range of voltages being monitored, or at intermediate points. This results in higher resolution over the expanded scale portion, together with improved accuracy. An illustrated embodiment of the invention embraces a voltage-limiting diode, to effect a cut-off of an ascending applied voltage. Some embodiments involve cascaded and summing amplifiers, negative feedback circuits, and multi-coil instrument movements where the coils are involved with the feedback. | ||||||
| 12 | Electric voltage measuring apparatus including a current-regulated zener diode for zero suppression | US3428897D | 1965-01-22 | US3428897A | 1969-02-18 | REW IAN ARTHUR; BELL ROBERT VALENTINE; COOPER RAYMOND |
| 13 | Suppressed zero meters | US28364452 | 1952-04-22 | US2817816A | 1957-12-24 | MEDLAR LEWIS A |
| 14 | Verfahren zur Messerfassung in Kraftfahrzeugen | EP85107413.8 | 1985-06-15 | EP0170834B1 | 1989-08-30 | Kohler, Rolf, Dipl.-Ing. |
| 15 | Verfahren zur Messerfassung in Kraftfahrzeugen | EP85107413.8 | 1985-06-15 | EP0170834A1 | 1986-02-12 | Kohler, Rolf, Dipl.-Ing. |
Es wird eine Einrichtung zur Meßwerterfassung in Kraftfahrzeugen insbesondere in Verbindung mit der Brennkraftmaschinensteuerung bzw. -regelung mit wenigstens einem Potentiometer als Meßwerterfassungsorgan vorgeschlagen, die in wenigstens einem Grenzbereich des Abgriffs des Potentiometers ein Nachführen der Grenzwerte auf den gemessenen Wert erlaubt. Es handelt sich somit um eine selbstjustierende Meßwerteinrichtung mit dem Erfolg, daß manuelle Feineinstellungen weitgehend vermieden werden können. Ein Flußdiagramm offenbart Hinweise für eine rechnergesteuerte Realisierung. |
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