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JP3165224U |
To actually determine an export pulse by setting the total length of the pulse power by the export pulse power, and to actually determine the export work cycle proportionality by setting the pulse power width. Provided is a pulse width m...
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JP2010283627A |
To generate synchronization signals of PWM (pulse width modulation) signals from the PWM signals.A triangular wave generation circuit 101 generates, from the PWM signals PWMIN, the triangular wave signals TRIA and TRIB having two positiv...
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JP2010278531A |
To provide a pulse width modulation (PWM) controller and a method of driving the PWM controller.The pulse width modulation PWM controller and the method of driving it are provided, and the PWM controller includes a PWM device 210 for pro...
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JP4586836B2 |
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JP4585970B2 |
A step form control signal (S1) generated by a control signal generating device (1) and a triangular wave carrier signal (S2) generated by a carrier generating device (2) are compared by a digital comparator (3) and this comparison signa...
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JP4584949B2 |
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JP4582053B2 |
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JP4582351B2 |
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JP2010258605A |
To provide a pulse detector which generates a sample hold signal and holds a signal level of a high-frequency signal even though the attenuation of the signal level is slow when a load having a high Q value to generate plasma is connecte...
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JP2010534419A |
A device for coding a signal using amplitude shift key modulation is disclosed. The device includes a class E amplifier with a switching transistor, and the gate of the switching transistor is supplied with a voltage having an operating ...
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JP4571905B2 |
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JP4561459B2 |
A PWM circuit converts output data of a calculator to a pulse width modulation signal, and outputs it to a load (speaker) through a buffer amplifier and a low-pass filter. A digital low-pass filter has the same filter characteristic as a...
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JP4562300B2 |
A novel clock control circuit and method in which phase synchronization with respect to an external clock can be realized without recourse to the external clocks. A clock controlling circuit includes a delay circuit sequence comprised of...
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JP4563737B2 |
In a pulse width modulation circuit, a multiphase clock generation section generates a multiphase clock signal according to a reference clock. Then, a pulse width modulation signal is generated according to input data and the multiphase ...
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JP4561480B2 |
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JP2010226334A |
To solve the following problem: a driver cannot be driven because a capacitor in a bootstrap circuit is discharged when an input signal is clipped to an upper limit and an upper-side transistor is continuously turned on in a pulse width ...
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JP2010220154A |
To provide a loudspeaker driving system in which a switch is connected in series to a loudspeaker and a current flowing through the switch is controlled by pulse output from a PWM circuit.One current terminal of a switch element is conne...
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JP4550661B2 |
The present invention comprises methods and circuits for spread spectrum frequency modulation that reduce peak spectral noise at the outputs or inputs of switching regulators. More specifically, the present invention modulates the operat...
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JP4543042B2 |
A signal forming circuit for forming an output signal in which EMI can be reduced, comprising a modulating signal generating part (3) and a clock modulating part (2). The modulating signal generating part (3) includes a reference signal ...
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JP2010200321A |
To provide a pulse width modulation control device capable of reducing cost of a lighting system, and simply replaceable.This pulse width modulation control device includes a load, a rectifier, a pulse width modulation control module and...
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JP2010178053A |
To provide a central processing unit having reduced power consumption for asynchronous signals.A modulation circuit 2 resonates a resonance circuit composed of an inductance element included in the modulation circuit 2, a bus line 1 and ...
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JP2010166219A |
To provide a load driving device which can reduce an offset voltage without requiring an arrangement of initializing a charge of an integral capacity and a terminal for an offset correction. In a load driving device, an input selection p...
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JP2010161432A |
To provide a PWM controller capable of approximating an overhead time generated by replacing a function of an analog comparator by a duty ratio operation part in a digital circuit infinitely to zero, thereby outputting high period PWM si...
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JP4510054B2 |
A micropower RC oscillator comprises a current generating section including a current source that generates a current; and a variable resistor of which the magnitude is variably set and which is configured by combining resistor elements ...
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JP4508478B2 |
When pulsewidth modulation is performed with a digital data pattern, appropriate pulsewidth modulation is performed in accordance with variations of a device or a driving system. In a case of inputting data where one pixel is expressed b...
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JP2010154222A |
To prevent a low-frequency noise for facilitation of noise removal in a pulse signal generating device using a PWM. The pulse signal generating device (10) includes a pulse width setting part (11), a waveform control part (12), and an ou...
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JP4495169B2 |
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JP4494763B2 |
A switching signal modulation circuit includes a switching control circuit having an ON time control terminal and an OFF time control terminal, the switching control circuit capable of adjusting respectively separately ON time and OFF ti...
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JP2010521925A |
A low-power digital pulse-width modulator (DPWM) architecture for high frequency dc-dc switch-mode power supplies (SMPS) is disclosed that is well-suited for integration in power management systems of small handheld devices. The DPWM can...
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JP2010521926A |
A digital controller for dc-dc switching converters can operate under light load conditions. The controller can be suitable for the use in switch-mode power supplies providing regulated output voltage for handheld devices and other low-p...
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JP2010135112A |
To provide a control device and a control method for PWM (Pulse Width Modulation)-controlling a controlled object while suppressing impulse noises independently of whether components are good or not even when a duty ratio is a value of 1...
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JP2010136278A |
To provide an apparatus for producing a PWM (Pulse Width Modulation) wave with a high resolution even in a low-speed processor only by adding a simple circuit. A PWM waveform producing apparatus 1 includes: a PWM circuit 100 for producin...
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JP4475928B2 |
In a method and a circuit for timing pulse generation, a frame pulse of a corresponding system is masked when an alarm signal of either a working system or a protection system is received, a monitoring window which indicates an absorbabl...
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JP2010124454A |
To provide a pulse generating circuit, pulse width modulator and delay circuit, wherein power consumption is reduced. A pulse generating unit 42 receives a clock CLK at a predetermined frequency and generates a pulse signal PWM1 which tr...
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JP4468564B2 |
A pulse width modulation circuit utilizes a clock divider (CD) to generate a plurality of clocks (C1-C6) to be used by a plurality of delay blocks (DL1-DL32). Each delay block (DL1-DL32) has plurality of delay elements (FF1-FF6) each of ...
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JP4469628B2 |
The present invention provides a spread spectrum type clock generation circuit whose EMI for peripheral equipment is reduced. The clock generation circuit comprises a phase-locked loop circuit and a clock modulation circuit. The clock mo...
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JP4467875B2 |
A mask system for non-invasive positive pressure therapy of sleep disordered breathing includes a shell, a quick release mechanism, a cushion, a cushion retaining mechanism, a ball & socket and an adjustable headmount with straps. The sy...
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JP4465402B2 |
The channel has an input (E) and an output (A), where the channel provides a functional correlation between an input parameter (R) applied at the input and an output parameter present at the output. The functional correlation is recorded...
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JP4456417B2 |
The present invention relates to a method for providing an improved generated arbitrary waveform (20) using a sigma-delta modulator (12) with pulse width modulation (14), said method comprising the steps of sigma-delta modulation (12) of...
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JP4449543B2 |
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JP4449029B2 |
The invention relates to a microcomputer 1 operating a control signal for controlling the state of an automobile on the basis of an input signal from a sensor. The output driver ICs 2A and 2B include the output driver 22 having power tra...
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JP4451236B2 |
Provided is a pulse modulation circuit that improves the on/off operation and improves the on/off ratio of an output power of the entire pulse modulation circuit in the switching operation. The pulse modulation circuit inputs a local osc...
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JP4446939B2 |
To provide an amplitude modulator in which modulator characteristics can be tuned. In an amplitude modulator, between two high frequency transmission lines 1 and 2 for transmitting high frequency signals, is provided a PIN diode 3 which ...
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JP2010074201A |
To provide a synchronization detection circuit in which the number of parts is reduced, high detection accuracy is ensured and deterioration in processing speed is prevented.The synchronization detection circuit 2 has: a polyphase clock ...
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JP4444037B2 |
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JP2010068415A |
To generate a PWM waveform signal without being delayed for change of a duty value by adopting a delay counter to dead time generation and to generate the PWM waveform signal of full duty even by a dead time generation method using the d...
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JP4436406B2 |
A load controller includes: an input circuit which detects that a drive instruction signal is less or equal to a first input threshold value; a constant current source activated in accordance with a detection by the input circuit; a PWM ...
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JP4434557B2 |
A pulse-width modulation circuit comprises a comparator having hysteresis characteristics of positive feedback, and an integrator, whose integrated output is compared with an input signal to produce a pulse-width modulation (PWM) signal ...
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JP4424546B2 |
The present invention provides a pulse width modulation (PWM) circuit comprising an PWM control circuit for setting an output signal to low when a logical level of a oscillation signal at a first input terminal changes from low to high, ...
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JP4411136B2 |
Provided is a sonar transmitter in which the structure is simplified and the power loss is decreased. A sonar transmitter comprises: a load unit having a transformer constituted with a primary wiring and a secondary wiring, and a wave tr...
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