Device for shifting and scaling signals of measuring transducer
专利摘要:
In order to provide a substantially error free biasing and scaling circuit for transducer signals, an operational amplifier and a field effect transistor are used in combination with a DC voltage source to bias and scale the transducer signal. 公开号:SU854282A3 申请号:SU782628152 申请日:1978-06-07 公开日:1981-08-07 发明作者:М. Ван Шойак Майкл 申请人:Сандстрэнд Дейта Контрол,Инк (Фирма); IPC主号:
专利说明:
(54) DEVICE FOR DISPLACEMENT AND SCALING OF MEASURING CONVERTER SIGNALS The invention relates to devices for shifting and scaling signals of the measuring transducer. A device for bias / I scaling the signals of the measuring transducer is known, comprising a power supply of a pullet current, a bias resistor, a scaling resistor, a zener diode, an amplifying element with two input and one output electrodes and a terminal for connecting the load, the bias resistor being connected between the positive pole of the power source and one of the input electrodes of the amplifying element, the scaling resistor is connected between the input of the device and the same electrode, the zener diode is connected between the positive pole of the power source (power supply and other input electrode of the amplifying element, and the output electrode of the amplifying element connected with adhesive for connecting the load tl. A disadvantage of known devices is the low bias accuracy and scaling. The aim of the invention is to improve the bias accuracy and signal scaling. To achieve this, the device for shifting and scaling the signals of the measurement transducer is additionally equipped with a field-effect transistor, and the amplifying element in It is implemented as an operational amplifier, the output electrode of the operational amplifier is connected to the gate of the field-effect transistor, the source of which is connected to the junction of the bias resistor, scaling resistor and one of the input amplifiers of the operational amplifier, and the drain to the terminal for connecting the load. The drawing shows a diagram of the proposed device. The device contains a DC power supply 1, a zener diode .2, a bias resistor 3, a scaling resistor 4, an input source 5, an operational amplifier (OU) 6, a field-effect transistor 7, and a terminal 8 for connecting the load. A zener diode is connected between the positive pole of the power source and an inverted AC input, the gate of the field effect transistor is connected to you
权利要求:
Claims (1) [1] SUMMARY OF THE INVENTION A device for biasing and scaling signals of a measuring transducer, comprising a DC power supply, a bias resistor, a scaling resistor, a zener diode, an amplifying element with two input and one output electrodes, and a load connection terminal, the bias resistor being connected between the positive pole of the power source and one of the input electrodes of the amplifying element, scaling. a resistor is connected between the input of the device and the same electrode, a zener diode is connected between the positive pole of the power source and the other input electrode of the amplifying element, and the output electrode with the target is amplified to the target. the amplifier element is connected mine for connecting the load, characterized in that, to increase the accuracy of bias and beating, it is additionally worn by a field-effect transistor, the body element is made in the form of an operational amplifier, and the output electrode of the operational amplifier is connected to the gate of the field-effect transistor, the source of which is connected to the connection point bias resistor, scaling resistor and one of the input electrodes of the operational amplifier, and the drain to the terminal for connecting the load.
类似技术:
公开号 | 公开日 | 专利标题 SU854282A3|1981-08-07|Device for shifting and scaling signals of measuring transducer KR900000707A|1990-01-31|Circuit element measuring device SE7813445A|1979-07-11|DIFFERENTIAL SIGNAL PROCESSING DEVICE WITH COMMON COUNTER DAMPING KR950024416A|1995-08-21|High frequency amplifier GB1126634A|1968-09-11|Instruments for locating on the skin of human beings and animals points for acupuncture JPS6195603A|1986-05-14|Power amplifier circuit SE7909093L|1980-05-07|DEVICE FOR SATURDING A LARGE POWERING A FIELD POWER TRANSISTOR ES475260A1|1979-04-16|Pulsed voltage amplification device with drift correction SU460548A1|1975-02-15|Quadrator SU634183A1|1978-11-25|Electronic moisture-content meter SU559365A1|1977-05-25|DC amplifier SU586541A1|1977-12-30|Solid-state dc amplifier GB1277768A|1972-06-14|Improvements in or relating to signal transmitting circuit arrangements SU921000A1|1982-04-15|Ac-to-dc voltage converter SU918892A2|1982-04-07|Device for measuring piezoelectric resonator active resistance SU491105A1|1975-11-05|Direct current measuring device GB1347437A|1974-02-27|Rectifier circuits using mos field effect transistors SU627407A1|1978-10-05|Electric measuring device overcurrent protaction arrangement RU1775075C|1992-11-15|Device for measuring bioelectrical potential of plants SU951647A1|1982-08-15|Voltage follower SU1376236A1|1988-02-23|Amplifier SU464874A1|1975-03-25|Automatic tolerance control device for amplifiers sensitivity JPS54121085A|1979-09-19|Led nonlinear compensation circuit SU442363A1|1974-09-05|Non-electric measuring transducer in direct current voltage SU520692A1|1976-07-05|Trigger
同族专利:
公开号 | 公开日 JPS544159A|1979-01-12| DE2821938A1|1978-12-14| US4125789A|1978-11-14| FR2394208B1|1982-07-30| DE2821938C3|1980-12-11| GB1576668A|1980-10-15| JPS6144360B2|1986-10-02| SE7806489L|1978-12-05| CA1093164A|1981-01-06| FR2394208A1|1979-01-05| IT7849701D0|1978-06-05| SE431702B|1984-02-20| DE2821938B2|1980-03-27| IT1105358B|1985-10-28|
引用文献:
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申请号 | 申请日 | 专利标题 US05/804,419|US4125789A|1977-06-07|1977-06-07|Biasing and scaling circuit for transducers| 相关专利
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