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JPH0243368B2 |
In a VCO, the switching of capacitor charge control circuits between capacitor charging and discharging states is rendered responsive to the current demand of a first FET monitoring the potential across the capacitor. The source-drain pa...
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JPH0243369B2 |
An integrated circuit voltage controlled oscillator (VCO) consists of an astable multivibrator with external fixed components resistor RT and capacitor CT. The multivibrator has a centre frequency timed by constant currents I1 charge and...
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JPH02224570A |
PURPOSE: To obtain a line deflecting circuit unneedful high-cost components by reducing a series circuit loss to a degree that the sum of the series components of voltage between both terminals of supply voltage and a sweep capacitor bec...
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JPH02215222A |
PURPOSE: To provide a drive signal generator of a half bridge circuit by providing a lamp wave generator for receiving the input signal of a rectangular wave, and converting it into a signal to which upward and downward slope voltages ar...
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JPH02213279A |
PURPOSE: To attain almost all change related with vertical deflection by inputting a prescribed program to a microcomputer in a television receiver, and changing the position of the vertical deflection and the constant of a frequency or ...
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JPH0237134B2 |
A sawtooth wave oscillator is disclosed which includes a series connection consisting of a charging circuit and a first capacitor, a voltage dependent capacitor connected in parallel to the first capacitor, and a discharging circuit conn...
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JPH0235494B2 |
A triangle waveform generator is provided with a compensation network to eliminate the effects of frequency and amplitude errors caused by switching-control loop delays of the system. This is achieved by causing early switching of an amp...
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JPH02198217A |
PURPOSE: To improve the linearity of a carrier signal by connecting a FET in series with a Zener diode and interrupting the FET when a capacitor is discharged. CONSTITUTION: A FET 3 is connected in series with a Zener diode ZD1 and a lev...
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JPH02198214A |
PURPOSE: To set a large time constant of a filter circuit without increase in the capacitance by feeding back a discharge current and a charging current cancelling a charge current and a discharge current required for the capacitor to sa...
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JPH02196508A |
PURPOSE: To start a triangle wave from '0'V at the time of turning on a power supply and to set the polarity of a start point of a triangle wave to the positive or negative side by connecting a control circuit to a triangle wave generati...
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JPH0232818B2 |
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JPH02186387A |
PURPOSE: To enable the execution of a smooth resonance flyback in an erasure period when a deflection beam is returned to a start point by accepting the current flowing via a flyback switching means from an electric power stage means in ...
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JPH02179022A |
PURPOSE: To improve the picture quality of a TV receiver by integrating a square pulse train having a duty ratio of 50% whose period is coincident with a scanning period, squaring an obtained trigonometric wave and generating a parabolic...
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JPH0288328U |
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JPH0286227U |
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JPH0230628B2 |
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JPH02502056A |
A temperature compensation circuit is disclosed which has a monolithic integrated circuit with at least one integrated resistor (R84) having a first temperature coefficient, and an integrated bias circuit containing a pair of cross-coupl...
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JPH0224272Y2 |
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JPH0224271Y2 |
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JPH02156725A |
PURPOSE: To simplify the circuit constitution by providing a terminal to which an external synchronizing signal having a larger absolute voltage than that of a reference voltage and a current limit element connected between the said term...
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JPH0226811B2 |
A pulse-width modulation circuit of self-oscillation type produces a pulse-width modulated signal having a pulse width corresponding to an amplitude of an analog input signal. An integrator having an amplifier and at least one capacitor ...
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JPH02154159A |
PURPOSE: To reduce costs by generating a detection current in proportional to the collector current of a switching transistor. CONSTITUTION: A control signal CR is used to control a SW circuit along with a switching(SW) signal C and a fi...
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JPH0221802Y2 |
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JPH02149013A |
PURPOSE: To reduce the number of terminals for externally attached parts in the case where a circuit is made into an IC by providing second and third I2L inverters to which the output of a first I2L inverter and the collector output of a...
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JPH0273826U |
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JPH02138879A |
PURPOSE: To reduce a burden of CPU by providing an incremental/decremental counter, a first flip-flop triggered by an ON signal and a second flip-flop triggered by an OFF signal. CONSTITUTION: When an incremental/decremental counter 25 r...
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JPH02125302A |
PURPOSE:To prevent the occurrence of a blind sector and a discontinuous characteristic by using the signal, which is the difference between the pulse width of a first pulse width modulation signal which has the pulse width changed for an...
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JPH0217963B2 |
Two multiplying digital-to-analog converters are used to digitally weight an analog current to produce a controllable output current. The output current is selected by a digital control signal applied to the control inputs of both conver...
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JPH02104015A |
PURPOSE: To reduce the charging time, to decide the oscillating frequency depending on the time constant comprising a resistance and a capacitance and the hysteresis width of a Schmitt circuit and to avoid the effect due to the fluctuati...
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JPH0213857B2 |
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JPH0294915A |
PURPOSE: To separately and arbitrarily set the cycle and the number of the steps of a triangular wave signal without changing the amplitude of the triangular wave signal by D-A converting the count value of pulses by step voltage proport...
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JPH0213858B2 |
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JPH0213513B2 |
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JPH0247833U |
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JPH0287816A |
PURPOSE: To easily control the output waveform by adjusting the CR resistance value and the timing of a counter. CONSTITUTION: The input signal from an input terminal is inverted by an inverter 6, and the output of the inverter 6 is conn...
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JPH0286311A |
PURPOSE: To suppress the dispersion in the characteristic of a triangle wave nearly equal to that of a single oscillating circuit by comparing a potential of a capacitor with set upper limit and lower limit voltages and supplying an outp...
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JPH0212057B2 |
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JPH0238824U |
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JPH0250513A |
PURPOSE: To attain high speed and to improve the temperature characteristic by executing temperature compensation of a threshold voltage having a hysteresis characteristic to determine an oscillation frequency and using an emitter follow...
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JPH0250514A |
PURPOSE: To attain high speed and to improve the temperature characteristic by selecting the number of transistors of a diode form at a level shifting circuit so that the voltage between the base and emitter of a transistor cannot be inc...
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JPH026590Y2 |
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JPH024520Y2 |
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JPH025334B2 |
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JPH0223713A |
PURPOSE: To obtain a circuit having required leading/trailing time by varying the reference voltage of a duplex parallel clip circuit and obtaining a trapezoidal waveform signal. CONSTITUTION: When a pulse signal A is inputted to an inpu...
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JPH023323B2 |
A sine wave to triangle wave convertor, including an amplifier having an input terminal and an output terminal, a sine convertor having an input terminal and an output terminal and for producing a sine wave at the output terminal in acco...
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JPH0219892A |
PURPOSE: To realize serial drive of power MOSFETs at a low loss by connecting a voltage supply circuit to the gate of the 1st power MOSFET. CONSTITUTION: The 1st and 2nd dividing capacitors 15 and 16 are respectively connected between th...
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JPH0214612A |
PURPOSE: To output a ramp function voltage with both positive/negative slopes by using a positive constant current circuit and a negative constant current circuit so as to share charge/discharge of an integration capacitor complementaril...
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JPH021966Y2 |
An electronic timer having an oscillator, a counter which counts outputs of the oscillator up to a predetermined count value and thereupon generates an output, and an output circuit for generating an output signal in response to the outp...
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JPH021444B2 |
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JPH02890B2 |
PURPOSE:To obtain a sawtooth wave oscillating circuit having a period proportional to a control voltage by constituting a charge/discharge switch circuit charged by a constant current, a couple of differential transistors (TR) and two co...
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