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JPS5741324U |
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JPS579242B2 |
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JPS5731012A |
PURPOSE:To execute a low voltage operation by a simple circuit configuration, by inputting an output of an element whose resistance value is varied by a temperature, to a C-MOS gate, DC-amplifying its output, and providing it to a heater...
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JPS571463Y2 |
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JPS574579A |
PURPOSE: To adjust the temperature characteristic precisely and readily by measuring the frequencies of main and secondary quartz oscillators at three points of a temperature range in a constant temperature chamber and calculating the co...
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JPS57578A |
PURPOSE: To remove an effect due to mutual coupling of two piezoelectric oscillators having different frequencies by dividing respective outputs of two oscillating circuits using said oscillators and fetching the frequency difference fro...
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JPS56165407A |
PURPOSE: To realize an optimum control for the frequency temperature characteristics of an oscillating circuit, by connecting a parallel circuit of capacitors and a switching circuit in series to at least one of plural oscillators. CONST...
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JPS56161706A |
PURPOSE: To enable the temperature compensation of an oscillator over a wide range, by changing the gain of a DC amplifier through the operation of a temperature switch, in accordance with the temperature detected by a temperature sensor...
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JPS56156003A |
PURPOSE: To compensate the temperature characteristic and increase the stability for a microwave oscillator using a dielectric resonator, by providing a control voltage generating circuit containing a temperature-sensitive resistance to ...
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JPS56146307A |
PURPOSE: To perform a compensation for frequency temperature of a quartz oscillator, by making use of the resistance temperature variation of a resistor having a positive and negative resistance temperature coefficient. CONSTITUTION: The...
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JPS5647692Y2 |
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JPS56144385U |
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JPS56132001A |
A frequency regulated crystal oscillator with (1) an oscillating circuit made up of an amplifier, piezoelectric crystal and voltage controls capacitor, and (2) a two-part compensating circuit connected to the terminals of the variable ca...
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JPS56129409A |
PURPOSE: To increase the frequency stability, by the temperature control of atmosphere in the vessel including the dielectric substance resonator. CONSTITUTION: The temperature detecting element 7 detects the temperature of the atmospher...
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JPS56117404A |
PURPOSE: To obtain a quartz oscillator having a simple constitution and excellent temperature characteristics, by installing a quartz oscillator, a heat source device and a heat transmission material attached with a temperature detecting...
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JPS56106404A |
PURPOSE: To enhace the reliability of an oscillating circuit, by installing a quartz oscillator and a CR oscillator in parallel and thus switching the quartz oscillator to the CR oscillator in case when a fault occurs to the quartz oscil...
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JPS56104505A |
The oscillator circuit comprises a digital temperature compensation circuit connected to a low and a high frequency quartz oscillator. The two quartz oscillators have the same inversion temperature points and a different temperature beha...
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JPS56104504A |
An oscillator circuit having a digital temperature compensation circuit which contains two low frequency quartz oscillators, a beat frequency generator and a correction circuit and a logic circuit selectively controlling an addition circ...
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JPS56102104A |
PURPOSE: To make it possible to adjust the frequency of quartz oscillators easily and to improve the yield, by measuring the frequency variation rate of an oscillation circuit until a temperature which is almost equal to the middle of pe...
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JPS56104246U |
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JPS56100502A |
PURPOSE: To compensate temperatures surely and simply, by providing two oscillating circuits and a beat circuit in the temperature compensation oscillating circuit using plural quartz oscillators. CONSTITUTION: The first oscillating circ...
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JPS5698907A |
PURPOSE: To enable temperature compensation of wide variety with one oscillator, by selecting the effective electrode of piezoelectric oscillator according to temperature for temperature compensation. CONSTITUTION: An electrode d1 is for...
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JPS5698006A |
PURPOSE: To reduce the frequency fluctuation caused by the temperature, by providing the temperature-sensitive resistance in series to a quartz oscillator. CONSTITUTION: The resonance frequency of the quartz oscillator 1 varies by the re...
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JPS5697896A |
PURPOSE: To improve time precision with simple constitution, by IC-implementing a circuit part, which obtains oscillation frequency temperature characteristics satisfying prescribed conditions by quantitative by detecting temperature, in...
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JPS5696719U |
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JPS5632801B2 |
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JPS5690630A |
PURPOSE: To reduce power consumption and to miniaturize a power amplifier by performing the high-efficiency power amplification of a wave to be modulated. CONSTITUTION: Carrier-level transistor TRQ1 and modulated-wavelevel TRQ2 are both ...
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JPS5687886A |
PURPOSE: To reduce outside attached parts and make easy to form into an IC by applying sampling clock pulses to an integrating circuit with a temperature depending property to detect a temperature from the shift of pulses caused by the t...
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JPS5687710U |
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JPS5685928A |
A circuit is provided for frequency drift compensation of a tuning diode in tunable RF-circuits, and comprises a temperature-responsive voltage divider coupled between an independent voltage supply source and a reference potential, the t...
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JPS5681481A |
PURPOSE: To enhance the accuracy of the electronic clock by presetting a frequency- dividing circuit periodically in accordance with the output of the temperature detection controlling the pulse-width of an indication driving pulse. CONS...
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JPS5666905A |
PURPOSE: To avoid the variance in oscillation frequency due to moisture and to hardly make subjective to the effect of parasitic capacitance, by providing a wiring board including a capacitor in which the rate of water absorption is 0 wi...
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JPS5623898Y2 |
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JPS5663289A |
PURPOSE: To ensure the temperature compensation for an electronic timepiece with a simple constitution, by controlling the division ratio of a variable divider with the output corresponding to the time constant depending on the temperatu...
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JPS5662406A |
PURPOSE: To reduce the effect by temperature, by fitting an oscillating element to a heat sink having a flange part and to which a heater is fitted. CONSTITUTION: A semiconductor like a Gunn diode is fitted at almost the center part of a...
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JPS5658685A |
PURPOSE: To make it possible to achieve pace adjustment correctly in a short period of time, without using any special pace measuring equipment, by making rough adjustment for pace acceleration and deceleration by a prescribed system and...
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JPS5658684A |
PURPOSE: To make it possible to achieve fine adjustment of pace acceleration and deceleration quickly and correctly, by changing DUTY of output signal of a voltage control circuit, which controls an oscillation circuit, in accordance wit...
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JPS5656204U |
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JPS5654493U |
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JPS5615161B2 |
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JPS5633586A |
PURPOSE: To lessen power consumption required for temperature compensation and oscillation, when conducting temperature compensation of time accuracy using a signal of difference in oscillation frequency between main and auxiliary quartz...
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JPS5613060B2 |
PURPOSE:To protect an output transistor by stopping an oscillator at the time of power source voltage where frequency becomes less than a desired lower limit frequency.
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JPS5628504A |
PURPOSE: To compensate simply frequency fluctuation dependent upon the temperature of a piezo-oscillator, by providing a compensating circuit consisting of an induction element and the first diode and a compensating circuit consisting of...
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JPS5611156Y2 |
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JPS5624804A |
PURPOSE: To make it possible to provide an antenna element with interchangeability corresponding to characteristics of an oscillating element, by incorporating a function of changing over bias voltages of the oscillating element in the a...
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JPS5620307A |
PURPOSE: To eliminate an error as to a clocking information signal by an oscillator with temperature compensation for an electronic timepiece, by keeping constant the mean frequency of the output signal of the oscillator, equipped with t...
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JPS5619482A |
PURPOSE: To improve timepiece precision by varying the frequency of a quartz oscillating circuit by reading temperature compensation data in response to the output of a temperature sense oscillator. CONSTITUTION: A time reference signal ...
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JPS5616891A |
PURPOSE: To obtain a circuit where the oscillation frequency is stable against temperature change without increment of current consumption, by cancelling transition of the oscillation frequency dependent upon temperature change by changi...
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JPS567326B1 |
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JPS5614703A |
PURPOSE: To obtain a stable frequency over broad temperature range by making frequency corrections of a tertiary curve in a range of 0∼50°C and at a low-temperature side, where it is nearly straight, by use of a capacitor. CONSTITUTIO...
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