| Document |
Document Title |
|
JPH06224635A |
PURPOSE: To obtain the frequency stable over a wide temperature range and to realize miniaturization and low cost simultaneously. CONSTITUTION: One terminal of, e.g. an AT-cut crystal vibrator 1 is connected to ground via a varactor elem...
|
|
JPH06169237A |
PURPOSE: To make an oscillating frequency of the ring oscillator circuit stable against a change in ambient temperature by allowing a temperature compensation means to control an output current from a constant current supply means in res...
|
|
JPH06120821A |
PURPOSE: To apparently keep the offset voltage at fixed level and to keep the stable synchronous characteristic to the temperature fluctuation by offsetting the temperature fluctuation caused in the offset voltage of an analog phase comp...
|
|
JPH0699169A |
PURPOSE: To set a threshold value automatically for determining whether water passage is permitted or is not permitted correctly when integrating the flow rate and service time of a water purifier. CONSTITUTION: A water passage detector ...
|
|
JPH0697765A |
PURPOSE: To compensate the temperature of an output signal having a phase temperature characteristic approximated by a polygonal line with high accuracy by connecting in series plural partial temperature compensating circuits set to diff...
|
|
JPH0653823A |
PURPOSE: To hold the oscillation frequency of a VCO always at a certain level by A/D converting VCO voltage impressed from a loop filter, fetching the A/D converted voltage into a CPU to detect a deviation in the oscillation frequency of...
|
|
JPH0614604B2 |
A method of using the temperature coefficient of the copper resistance of an oscillating coil to compensate for the temperature coefficient of the quality factor of the same oscillating coil. To this end, a voltage proportional to the co...
|
|
JPH066133A |
PURPOSE: To facilitate the adjustment of magnetic coupling between a dielectric resonator and a lead wire connecting to a variable reactance element by floating the lead wire from a dielectric board so as to easily deform the lead wire. ...
|
|
JPH0584880U |
[Purpose] Provided is a linearizer for temperature compensation, which has a simple circuit configuration and is easy to adjust. [Constitution] The zero-to-the-power circuit (15) generates a constant signal. The 1st to nth power circuits...
|
|
JPH05304467A |
PURPOSE: To correspond to temp. and even power source voltage change, to easily execute IC conversion and to make a system small. CONSTITUTION: Immediately before the power source of a phase locked loop circuit 10 is turned on or an osci...
|
|
JPH0543546Y2 |
|
|
JPH05284011A |
PURPOSE: To suppress frequency fluctuation caused by the rapid temperature change of a voltage controlled oscillator. CONSTITUTION: The output of a voltage controlled oscillator 1 is branched by a power divider 2, one output is used as a...
|
|
JPH05283934A |
PURPOSE: To suppress the frequency fluctuation due to the rapid temperature change of the resonance type SAW oscillator. CONSTITUTION: A resonance type SAW oscillator 11 incorporates the resonator forming the temperature detection transd...
|
|
JPH0576201B2 |
PURPOSE:To compensate oscillating frequency fluctuation attended with temperature change by providing a transient temperature correction circuit generating a temperature correction signal representing the same characteristic as the tempe...
|
|
JPH0540569Y2 |
|
|
JPH0567089B2 |
|
|
JPH05243990A |
PURPOSE: To provide a voltage controlled oscillator which is not affected by power noise so much, by specifying the number of amplification stages and total phase shifts in a frequency which is previously set. CONSTITUTION: Four differen...
|
|
JPH0564488B2 |
|
|
JPH05218739A |
PURPOSE: To decrease the dispersion in the oscillating frequency of an oscillation circuit subject to temperature compensation by combining crystal vibrators divided from each frequency temperature characteristic with semiconductor eleme...
|
|
JPH05218854A |
PURPOSE: To provide the subject oscillator which can work with a power supply of low voltage like 3V or so and can secure the oscillation output of high purity. CONSTITUTION: A time constant circuit 14 contains a capacitor 14b which is c...
|
|
JPH05218738A |
PURPOSE: To attain accurate temperature compensation by providing two groups of switch elements selectively subject to on/off control in response to compensation data and selecting the element of each group so as to control a load capaci...
|
|
JPH05199035A |
PURPOSE: To make the oscillating frequency stable without increasing an occupied area of a correction circuit part in an IC chip by providing the correction circuit automatically correcting the oscillating frequency of the oscillation ci...
|
|
JPH05191274A |
PURPOSE: To form the circuit inexpensively through the use of an oscillation section whose frequency change due to temperature is large and to obtain a constant frequency independently of the temperature. CONSTITUTION: An output of a CR ...
|
|
JPH05505068A |
A circuit for temperature compensation of a varactor voltage controlled oscillator control signal includes a proportional to absolute temperature (PTAT) current source and an adjustable, temperature stable current source. The difference ...
|
|
JPH05167419A |
PURPOSE: To disregard the change with the lapse of time in the output voltage of an oscillation circuit and to detect a change in an oscillation frequency due to the deterioration in components of an oscillation circuit. CONSTITUTION: Th...
|
|
JPH05160754A |
PURPOSE: To obtain a controller for the local oscillating frequency miniaturized and simplified at a lower cost more than a conventional AFC circuit. CONSTITUTION: When temperature information detected by a temperature sensor 1 and obtai...
|
|
JPH05152845A |
PURPOSE: To inexpensively manufacture the microwave oscillator and to reduce a temperature change in the oscillating frequency by making a casing of a plastic. CONSTITUTION: An oscillation circuit is formed on the surface of a dielectric...
|
|
JPH05152940A |
PURPOSE: To make a phase of an oscillating frequency stable with respect to a rapid surrounding temperature change. CONSTITUTION: The oscillator is provided with an oscillation circuit 1 embeded, an insulator 2 covering spherically the c...
|
|
JPH0543611U |
[Purpose] In the high-frequency oscillation circuit, by using a temperature compensation element that prevents the resistance value from changing with respect to the temperature change of the diode limiter as a negative feedback resistor...
|
|
JPH05144582A |
PURPOSE: To prevent malfunction or action instability for a high frequency oscillation circuit and an intermediate amplifier circuit. CONSTITUTION: A coil 2 for excitation is disposed close to an electrodeless discharge lamp 1. High freq...
|
|
JPH05128740A |
PURPOSE:To automatize not only free-run frequency adjustment but also correction of data discrimination point deviation by comparing the phase, of the free-run frequency of a first PLL circuit for clock reproducing with that of a referen...
|
|
JPH05102780A |
PURPOSE: To make the vibration frequency stable by loading a pressure or tensile mechanic force to the outer circumference of a crystal resonator so as to cancel or decrease a vibration frequency change due to the temperature of the crys...
|
|
JPH0590954A |
PURPOSE: To provide the temperature compensation type oscillator whose FM noise characteristic is improved. CONSTITUTION: The oscillator consists of a crystal oscillator circuit 35, a temperature detector circuit 21 outputting temperatur...
|
|
JPH0590838A |
PURPOSE: To compensate the temperature over a wide range of the frequency and the temperature without deteriorating the Q value of an element by approximating the drift value obtained per unit temperature of the oscillation frequency of ...
|
|
JPH0575445A |
PURPOSE: To prevent the timewise software processing from being changed by correcting fluctuation of an oscillating frequency of a CPU rationally regardless of using a low cost CR oscillator. CONSTITUTION: When a power supply voltage and...
|
|
JPH0575446A |
PURPOSE: To correct a secular change at all times by providing a voltage controlled frequency correction circuit in the crystal oscillator circuit. CONSTITUTION: Two voltage control circuits 2, 3 are provided in the inside of the crystal...
|
|
JPH0510405Y2 |
|
|
JPH0563559A |
PURPOSE: To entirely exclude a disadvantage resulting from a change in a Q of an LC circuit A even when the Q of the LC circuit A changes due to a change in an ambient temperature. CONSTITUTION: A current of a constant current circuit B ...
|
|
JPH0516202B2 |
|
|
JPH0515082B2 |
|
|
JPH0535340A |
PURPOSE:To provide the temperature compensating circuit which can obtain an arbitrary temperature compensating characteristic. CONSTITUTION:The forward voltage of a diode 1 is converted to a digital value by an A/D converter 1 and fetche...
|
|
JPH0537286A |
PURPOSE: To reduce the influence of inductance operating on the temperature dependency of a frequency by constituting crystal body so that the temperature coefficient of the crystal body and the temperature coefficient of inductance sati...
|
|
JPH053162B2 |
|
|
JPH053161B2 |
|
|
JPH052001B2 |
PCT No. PCT/JP86/00358 Sec. 371 Date Mar. 20, 1987 Sec. 102(e) Date Mar. 20, 1987 PCT Filed Jul. 14, 1986 PCT Pub. No. WO87/00706 PCT Pub. Date Jan. 29, 1987.The present invention relates to a local oscillation apparatus which is used as...
|
|
JPH04358407A |
PURPOSE: To keep the fluctuation of frequency caused by the variance of power voltage within a rated range and to omit the elements like a Zener diode, etc., by correcting the junction capacity of an oscillation transistor to a prescribe...
|
|
JPH04348614A |
PURPOSE: To automatically correct fluctuations caused due to temperature effect or aging. CONSTITUTION: An electrically controllable oscillation circuit 30 is provided with two balanced mutual conductance circuits, and each circuit is pr...
|
|
JPH04345319A |
PURPOSE: To realize the high speed synchronization frequency synthesizer in which synchronization is taken at a high speed even under a temperature change thereby obtaining a high frequency signal with a desired frequency quickly. CONSTI...
|
|
JPH0448006Y2 |
|
|
JPH04123623U |
|
