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JPS6216577B2 |
PURPOSE:To reduce temperature drift and initial drift for switching-on, by making the storage time for turning-on-off of a transistor independent of the oscillation frequency. CONSTITUTION:When base potential V10 of transistor TRQ1 reach...
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JPS6253021A |
PURPOSE: To constitute the titled oscillator with excellent start characteristic and high stability by means of a small capacity of storage circuit by storing in advance a quantity required for temperature compensation as a control volta...
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JPS6248113A |
PURPOSE: To compensate accurately the fluctuation of a general electronic circuit characteristic widely and automatically by changing the amplification factor of an input voltage in response to a resistance of a variable resistive elemen...
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JPS6218829A |
PURPOSE: To facilitate adjustments of an oscillator and to stabilize char acteristics by compensating frequency temperature characteristics which are controlled wit the output of a digital analog converter directly, roughly, and previous...
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JPS6218828A |
PURPOSE: To obtain stabilized temperature compensation characteristics having no linearity by converting the output from a digital analog converter to a temperature compensation digital code and correcting the nonlinearity of control vol...
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JPS622837Y2 |
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JPS622811Y2 |
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JPS621226B2 |
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JPS623527A |
PURPOSE: To keep the secular change characteristic of a piezoelectric vibrator and an oscillation circuit component by containing the 1st heat insulator part containing an oscillation circuit including the piezoelectric vibrator into the...
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JPS6161282B2 |
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JPS61182110U |
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JPS61252716A |
PURPOSE: To set stably an oscillation start voltage by supplying a voltage signal generated in a load resistor circuit to the 1st MOSFET gate electrode so as to control the drive power supply to the oscillation circuit. CONSTITUTION: In ...
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JPS61234603A |
PURPOSE: To perform temperature compensation over a wide range of temperatures, by constituting a control circuit which produces an output indicating a secondary temperature characteristics opposite to those of a crystal oscillator circu...
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JPS61163417U |
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JPS61224606A |
PURPOSE: To prevent an output frequency of an oscillator from being changed suddenly by adding an integration means to a microprocessor so as to slow down timewise the change in a temperature compensation DC voltage fed to a varactor dio...
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JPS61220526A |
PURPOSE: To compensate automatically aging changes in an output frequency of an oscillator by storing in advance the relation between the oscillating frequency and the logarithmic time axis changed linearly and measuring the operating ti...
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JPS61156320U |
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JPS61216523A |
PURPOSE: To reduce the difference in potential from the wiring of an oscillation system and to obtain the same effect with an improvement in moisture resistance (leak resistance) by surrounding the wiring parts of elements arranged on th...
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JPS6142882B2 |
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JPS6142205B2 |
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JPS61176203A |
PURPOSE: To obtain a compact piezoelectric oscillator which can be controlled easily with small power consumption, high reliability and highly stable low frequency, by extracting a difference of frequency between the piezoelectric oscill...
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JPS61119416U |
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JPS6131641B2 |
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JPS6130763B2 |
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JPS61109231U |
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JPS61107213U |
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JPS61107212U |
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JPS61104620U |
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JPS6121854Y2 |
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JPS6126726B2 |
A control voltage for a crystal oscillation circuit is formed by adding two separately generated voltages. One of these voltages is proportionally variable with changes of temperature. The other voltage generally follows the temperature-...
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JPS6195104U |
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JPS6193012U |
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JPS6124666B2 |
A semiconductor temperature compensation circuit for an electronic timepiece is provided. The temperature compensation circuit is characterized by a temperature detection circuit comprised of MOS transistors, at least two of which have d...
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JPS61125208A |
PURPOSE: To obtain an oscillation frequency signal subject to temperature compensation over a wide temperature range by providing at least a reactance compensation circuit compensating a low temperature region of a crystal oscillator and...
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JPS6190305U |
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JPS6188345U |
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JPS6123895B2 |
A frequency generator comprises a quartz crystal controlled oscillator subjected to at least one variable physical parameter such as temperature and has an arrangement for calibrating the frequency with respect to a standard signal with ...
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JPS6181208U |
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JPS6120824B2 |
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JPS6175619U |
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JPS6195618A |
PURPOSE: To reduce the power consumption of a numeral conversion means by detecting a change in the 1st digital signal to conduct a switch and keeping another input digital signal to output of a digital signal. CONSTITUTION: The change i...
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JPS6168515U |
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JPS6188119A |
PURPOSE: To simplify a temperature detecting circuit and to prevent the circuit from the generation of errors due to the change of power supply voltage by driving a ring oscillator by a constant current circuit and finding out the change...
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JPS6157616U |
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JPS6157705U |
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JPS6150315U |
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JPS6147511U |
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JPS6147510U |
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JPS6144922U |
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JPS6140022U |
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