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JPH11112303A |
To provide a VCO circuit which can obtain the oscillation of a high frequency and subtly controls the frequency by means of input voltage. A voltage current conversion part 10 converting input voltage Vin into current, a charge/discharge...
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JPH11112302A |
To vary the oscillation frequency of an oscillation circuit, which generates an oscillation signal by inverting the output voltage according to the charging voltage of a capacitor, with simple constitution by controlling the charging cur...
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JP2883953B2 |
Oscillator in which a capacitor (1) is periodically charged and discharged. In accordance with the invention, two transistors (T3, T6) are connected parallel to the capacitor with their base-emitter paths in anti-parallel. When a voltage...
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JP2872668B2 |
A vertical deflection amplifier (20) of a video display apparatus includes first (Q1) and second (Q2) transistor amplifier output stages arranged in a totem-pole, push-pull configuration. A vertical-deflection winding (LV) is coupled to ...
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JPH1131949A |
To allow a simple means to output a synchronous triangular wave signal which always has a constant amplitude even when the frequency of an AC signal varies. This circuit consists of a triangular wave generating circuit part 11 which gene...
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JP2841085B2 |
A switching voltage regulator is stabilized against changes in input voltage by supressing the increase in loop gain due to increased input voltage. The reduction of loop gain is achieved by use of a modified triangle waveform which is c...
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JPH10335993A |
To provide a waveform-generating apparatus which can generate a predefined arbitrary signal waveform with high accuracy at a high speed and with a simple constitution. A waveform-generating apparatus is provided with a memory 12, which s...
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JP2838212B2 |
This high-precision oscillator srage, with reduced response times, includes only NPN transistors on the signal path and comprises a threshold detector circuit (13 min ) connected to a first and to a second threshold voltage (V1, V2) and ...
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JP2837172B2 |
Electrical circuitry is useful for thermomechanical analysis apparatus. A sine-type wave force signal is generated by combining a triangular wave with an alternating wave equal in magnitude to about half of the square of the triangular w...
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JP2826509B2 |
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JP2812744B2 |
PURPOSE:To make the generator highly efficient by varying a hysteresis voltage width of a voltage comparator means in response to the input voltage at a 2nd power terminal connected to the voltage comparison means. CONSTITUTION:The termi...
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JP2812739B2 |
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JP2811176B2 |
The invention is related to an integrated semiconductor circuit comprising an output stage (30a) and a control circuit (30b). The output stage (30a) comprises several (e.g. four) pull-down output transistors (31-34), which are sequential...
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JP2795356B2 |
A signal delay circuit includes a driving circuit for driving an output signal with a voltage swing voltage between a supply voltage and a ground voltage. The signal delay circuit further includes a varactor load which is coupled to the ...
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JP2790883B2 |
A triangle wave generator (10) which is programmable, and which provides variable amplitude, frequency independent, triangle waves over a wide frequency bandwidth while employing a low voltage power source. The triangle wave generator (1...
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JPH10215152A |
To arbitrarily set the waveform of a driving signal driving a switching element by feeding back/supplying the clock signal of a frequency which is set in accordance with the detection signal and the control signal of output voltage in a ...
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JPH10209822A |
To stably output a triangular wave whose positive and negative waveforms are symmetrical by switching a reference voltage by an output voltage whose polarity is inverted when the output voltage of an inversion integrator which integrates...
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JPH10210774A |
To provide a small pulse generator suitable for driving an electromechanical conversion element in which the number of components is decreased and power consumption is reduced. An oscillation circuit 2 is driven from a low voltage power ...
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JP2783964B2 |
PURPOSE: To obtain a timing signal generating circuit in which timing duration does not change even though the values of resistors and capacitors are changed. CONSTITUTION: A reference time generating circuit 2 is provided to output puls...
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JP2776515B2 |
A four-channel multifunction digital frequency synthesizer which uses direct numerical synthesis to generate one or more complex output signals having selectable frequency, phase offset, amplitude level and waveform is provided. A wavefo...
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JP2772957B2 |
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JP2771158B2 |
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JPH10506514A |
A wireless digital communication device having a pulse shaping network for pulse shaping digital signals before modulation. The pulse shaping network comprises a shift register to which data to be modulated are fed. Outputs of the shift ...
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JP2763393B2 |
An oscillating circuit (5, 6, 7) whose oscillation frequency can be varied with change of a constant current circuit output current I2, which in turn can be varied with change of a power source voltage Vcc, suitable for use in portable c...
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JP2764234B2 |
PURPOSE: To provide circuit configuration suitable for making the digital waveform generator for correcting the tube surface of a CRT into an MOSIC. CONSTITUTION: This digital waveform generator for correcting the tube surface of the CRT...
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JP2764140B2 |
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JPH10155269A |
To improve a driver circuit operated with a charge pump voltage higher than that of a power unit. A pre-slewing circuit 72 made up of a bipolar transistor and a CMOS transistor is provided to reduce a gate voltage of a power unit at a po...
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JP2758852B2 |
PURPOSE: To obtain a triangular wave oscillation circuit capable of being synchronized with an external clock signal and oscillating the triangular wave with a stable amplitude by providing 1st, 2nd comparators and a flip-flop and contro...
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JP2758594B2 |
A bipolar transistor circuit is disclosed, which receives input voltage signals (125,126) and outputs a current I₀ of a polarity in accordance with the input signals and of a predetermined amplitude. This circuit includes a first curre...
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JPH10135742A |
To generate a sine wave in a comparatively simple device constitution by calculating continuously the instantaneous value of a sine or cosine wave with a prescribed time difference and converting these calculated value into level signals...
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JP2755219B2 |
To make an oscillation circuit stable by providing a means compensating the fluctuation in an oscillating frequency based on temperature characteristics of a couple of transistors(TRs), components of an operational amplifier circuit, so ...
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JPH10126226A |
To change the noise characteristics of the processor. The pulse processor is provided with a differentiation circuit 21 that differentiates an input signal, an integration circuit 24 that integrates an output signal of the differentiatio...
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JP2748385B2 |
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JP2746429B2 |
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JPH10107976A |
To reduce waveform distortion in a staircase wave being a piezoelectric element drive signal in the image reader where a linear image sensor is deviated in the main scanning direction via a piezoelectric element so as to improve the reso...
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JPH10107595A |
To provide an optional waveform generator that generates even a high precision ramp signal which is used for a linearity test for a high precision A/D converter. The optional waveform generator that stores digital waveform data, applies ...
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JPH1093347A |
To provide the clock oscillating circuit with high accuracy in which a duty ratio is constant even on the occurrence of a temperature drift or dispersion in circuit components with a simple configuration. The clock oscillating circuit is...
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JPH1079650A |
To obtain a clock signal with a desired frequency without increasing data stored in a ROM in the case of generating the clock signal with the desired frequency. An adder means 1 adds a 1st prescribed value to a preceding value (input val...
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JP2727508B2 |
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JP2723856B2 |
To use an adder having a smaller number of bits and a data latch circuit to configure a sawtooth signal data generation circuit by switching the data on the width period of a pulse signal to the 2nd digital data from the 1st digital data...
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JP2718068B2 |
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JPH1041791A |
To be suitable for making into an integrated circuit capable of performing a stable circuit start operation by connecting first and second charge pump circuits by a connection circuit and turning generated triangular wave signals to desi...
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JPH1032726A |
To provide a vertical deflecting circuit for which the number of matching resistors required for differentially driving amplifiers is reduced. Current source pairs 100a and 100b respectively having high output impedance (>1MΩ) are conne...
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JPH1032469A |
To set output voltage to be constant and to always maintain change width to be constant even if deflection frequency changes by changing rise voltage per sample pulse in accordance with the period of a sawtooth wave signal. Constant volt...
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JPH1013197A |
To obtain the simple and general-purpose sawtooth wave generating circuit with a smaller number of components, without the need for manual adjustment of resistors. The sawtooth wave generation circuit is obtained by connecting a referenc...
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JPH102759A |
To provide an interpolation pulse generator having excellent fast responsiveness which is also applicable for very small-interval measurements. In an M division circuit 1, partial waveforms near an intermediate level of a M phase of a si...
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JPH09312822A |
To prevent an interference noise which is generated from a switching element by providing a switching power circuit and a phase-locked loop device which synchronizes phase of a triangular wave generator that constitutes power of the circ...
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JP2673346B2 |
A drive circuit for a horizontal deflection circuit that is operable at a number of horizontal scan rates includes a pair of transistors coupled in a push-pull arrangement. The voltage supplies for the drive circuit transistors, which pr...
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JPH09284104A |
To reduce man-hours for adjustment in the case of combination of adjustment of a vertical position and adjustment of a vertical amplitude in the case of adjusting the amplitude of a screen of a display device. The circuit is made up of a...
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JPH09284586A |
To approximate the waveform of the vertical sawtooth wave signal output to the ideal waveform in a scanning period of the vertical sawtooth wave signal that is produced from combination of a ΣΔ modulation type D/A converter and an anal...
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