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JPS59153304A |
PURPOSE: To detect accurately the temperature of a crystal oscillator by constituting the system that an original frequency component is excluded, only the frequency changing component fluctuated by temprature is extracted and converted ...
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JPS59149406A |
PURPOSE: To reduce the temperature difference between an IC which incorporates a temperature sensor and a piezoelectric oscillator by arranging the IC and piezoelectric oscillator on the same metallic plate. CONSTITUTION: The metallic pl...
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JPS5933859B2 |
A detector which may be subject to temperature variations and power supply drift comprised of an avalanche transistor circuit having a variable threshold that is sensitive to input signals within a useful frequency band and noise which p...
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JPS59122112A |
A closed loop integrated circuit temperature stabilizer 10 has an on-chip temperature sensor 12 for supplying a voltage indication of temperature to an op amp 22 which maintains chip temperature equilibrium by controlling a load transist...
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JPS59108407A |
PURPOSE: To obtain easily the compensation of temperature characteristic over a wide temperature range by connecting the 1st fixed capacitive element in series with a varactor element for temperature compensation and connecting the 2nd f...
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JPS59105720A |
PURPOSE: To ensure the highly accurate compensation of temperature in terms of a circuit by using a code inverter which delivers the control voltage for control of the dividing ratio of a frequency dividing circuit with the output of an ...
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JPS5925401B2 |
1535231 Pulse oscillator circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 18 Feb 1976 [21 Feb 1975] 06372/76 Heading H3T In a self-triggered pulse oscillator circuit including a single non-inverting logic gate 12 and an oscillator...
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JPS59100815A |
PURPOSE: To obtain a clock pulse generator enabled to compensate temperature without temperature control by calculating the frequency ratio between an oscillation output from an oscillation element with low temperature change and an osci...
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JPS5919471Y2 |
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JPS5986311A |
PURPOSE: To compensate an oscillating frequency with high accuracy, by turning on a switch means by a single pulse compensating signal and connecting once a frequency compensating capacitor and an oscillating circuit within a prescribed ...
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JPS5980005A |
PURPOSE: To eliminate virtually the dependence on the powder supply voltage for an oscillation frequency by using a constant voltage generating circuit which generates the constant voltage to an inverter from a power supply and then impr...
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JPS5980004A |
PURPOSE: To reduce the necessary floor area of an oscillating circuit including an additional circuit on a printed-circuit board by packing a temperature compensating circuit and the oscillating circuit to different printed-circuit board...
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JPS5915135Y2 |
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JPS5974709A |
PURPOSE: To ensure compensation of temperatures of a wide range and to simplify the circuit constitution by providing a series circuit of the 1st and the 2nd capacitors and diodes to a temperature compensating circuit and varying the res...
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JPS5910091B2 |
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JPS5933310U |
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JPS5933906A |
PURPOSE: To attain a crystal oscillator with high accuracy, by detecting an ambient temperature, converting it into a DC signal, using a microprocessor, obtaining a DC signal compensating the temperature characteristics of a crystal osci...
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JPS5925427A |
PURPOSE: To obtain a fixed frequency independent of temperature change, by varying the dividing ratio of frequency in response to the temperature. CONSTITUTION: A temperature sensor S detects the ambient temperature. The information on t...
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JPS5923919A |
A temperature compensated crystal oscillator has a permanent interval drift characteristic within a given temperature range. Output pulses from the oscillator are fed to a pulse swallower controlled by a PROM. The PROM is programmed with...
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JPS593695B2 |
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JPS599611U |
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JPS59176B2 |
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JPS58207702A |
PURPOSE: To prevent the fluctuation of capacitance of a capacitive element due to power supply fluctuation, by providing a constant voltage circuit which makes a DC voltage constant impressed between two terminals extracting the capacita...
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JPS58206207A |
PURPOSE: To simplify the constitution and to facilitate the control for the titled oscillator, by giving the rough frequency compensation over the entire range of compensation temperatures by means of a temperature compensating capacitor...
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JPS58205887A |
PURPOSE: To make it possible to carry out temp. compensation without changing an oscillating condition to a large extent, by combining a variable frequency dividing circuit and the change in the oscillating condition of a crystal oscilla...
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JPS58204608A |
PURPOSE: To form a crystal oscillator having a very small frequency change due to temperature change, by combining a crystal oscillator of 5°, -5° cut and a crystal oscillator of 20°, -20° cut. CONSTITUTION: The 5°, -5° cut crystal...
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JPS5852387B2 |
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JPS58198925A |
PURPOSE: To shorten hit time of an output, by composing a dual oscillator switching relay of a TR and photocouplers except an output supplying and monitoring relay for oscillators. CONSTITUTION: When the oscillating circuit 3 of an oscil...
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JPS58187004A |
PURPOSE: To compensate temperature and to reduce power consumption, by exciting two crystal oscillators at the same time with one output of two C-MOS inverters connected in series. CONSTITUTION: A C-MOS inverter at the power supply side ...
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JPS58184809A |
PURPOSE: To control a varactor, by giving a resonance frequency temperature coefficient of a crystal oscillator in a digital code series, providing an operating function in a control system, obtaining a resonance frequency deviation at a...
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JPS5846562Y2 |
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JPS58178282A |
PURPOSE: To eliminate frequency adjustment of a low frequency oscillation circuit by obtaining a reference time signal corrected with a high frequency oscillation circuit with the contents of a phase difference counter automatically conv...
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JPS58155116U |
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JPS58175306A |
PURPOSE: To ensure the temperature compensation to an oscillating circuit, by giving a temperature coefficiency to the bias voltage to a variable capacity diode. CONSTITUTION: An active element 2 for oscillation and bias power supplies 5...
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JPS58152031U |
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JPS58152030U |
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JPS58172577A |
PURPOSE: To realize an electronic time piece capable of maximizing a high stability of a high frequency oscillation circuit with a low power consumption by supplying a high frequency oscillation signal to a high frequency switching circu...
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JPS5845203B2 |
Crystal oscillators have been provided with a negative temperature characteristic capacitor to improve the frequency stability of the oscillator in the middle range of temperature, and have been provided with a voltage sensitive capacito...
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JPS58168988A |
PURPOSE: To increase a temperature compensation range by controlling the frequency of a crystal oscillator and the operation of a frequency divider according to the square of the temperature information of a temperature measuring circuit...
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JPS58165080A |
PURPOSE: To enable the temperature compensation keeping oscillating requirement of a quartz oscillator optimum while improving massproductivity by performing individual correcting operations by the upper digit or the lower digit of the r...
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JPS58165079A |
PURPOSE: To enable temperature compensation keeping the oscillating condition of a quartz oscillator optimum while elevating the massproductivity by performing individual correcting operations based on a count value of temperature inform...
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JPS58143604A |
PURPOSE: To ensure a highly efficient application of a hybrid IC substrate, by have constituting to a contact between the electrodes of two chip capacitors which are packaged on the hybrid IC substrate and the corresponding electrodes of...
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JPS58123632U |
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JPS58111523U |
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JPS58109313U |
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JPS58120304A |
PURPOSE: To reduce the change of the oscillated frequency due to a change of humidity, by packing a foaming plastic agent into a metallic case which encloses the resonator of a dielectric resonator control oscillator. CONSTITUTION: A foa...
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JPS58114631A |
PURPOSE: To eliminate an effect of humidity for a semiconductor high frequency oscillator, by measuring the humidity of an oscillating part and then giving a compensation to the oscillating part from a relation among the measured value, ...
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JPS58114606A |
PURPOSE: To maintain the level width of an oscillation output signal at a constant level regardless of the fluctuation of the output voltage of an oscillating element, by providing a clamping circuit to clamp the oscillation output signa...
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JPS58114506A |
To compensate for frequency variation in the quartz oscillator 4, 6 due to temperature variation, a second quartz oscillator 12, 14 forming a thermal sensor is employed. The beat frequency fB (circuit 16) which is counted in the counter ...
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JPS5899908U |
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