Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 551 - 600 out of 4,464

Document Document Title
JP2008187432A
To provide a ramp voltage generation circuit suitable for an A/D converter for suppressing variation caused in a digital value to be obtained by an A/D converting operation.This ramp voltage generation circuit is provided with: a stabili...  
JPWO2006092842A1
A frequency range is made large, without making power consumption increase. A current circuit (1a) and (1b) output the charging current based on control current. A capacitor (C1) and (C2) are provided corresponding to a current circuit (...  
JP2008527797A
Disclosed is a novel design of a fully integrated UWB transmitter. The transmitter includes a pulse generator, a pulse modulator, and an ultra-wideband drive amplifier. A new low voltage low power pulse generator circuit is disclosed whi...  
JP2008167091A
To prevent blunting of the waveform of triangular waves in a comparatively high oscillation frequency regarding an oscillation circuit outputting two triangular waves having the same amplitude and inverted phase and a PWM circuit using t...  
JP4111636B2  
JP2008148204A
To provide a pulse width modulation circuit capable of utilizing a period as a temporal reference irrespective of the period of a triangle wave signal being varied discretely.The circuit includes triangle wave producing means (11) for pr...  
JP4105831B2  
JP2008136107A
To provide a Ramp wave generation circuit which generates ramp wave in the ideal waveform varying at high speed.Conduction of a switch 21 and a switch 22 is alternately switched to alternately output ramp wave R1 to be output from a ramp...  
JP4100455B1
[Subject] Suitable Pulse Density Modulation is performed by making carrier frequency regularity mostly. [Solution means] Based on the current based on an input signal, the voltage in the 1st integration circuit is changed in the 1st peri...  
JP4085664B2  
JP2008066930A
To provide an oscillation circuit which has high frequency stability, and is easily designed.The oscillation circuit comprises: a first charge/discharge circuit having a first current source for supplying a current I in proportion to pow...  
JP2008067005A
To generate a triangular wave signal synchronizing with an external circuit.A charge/discharge circuit 32 charges/discharges a capacitor C2 in which voltage of an end is fixed. A first comparator COMP1 compares output voltage Vout of the...  
JPWO2008032782A
[Subject] It can operate with the low voltage and low electric power, and provides the pulse input type power amplifying device etc. which controlled generating of the harmonics ingredient effectively. [Means for Solution] An output side...  
JP4063154B2  
JP2008054220A
To improve precision of a pulse signal period.In the timing of level transition when a second period voltage Vsaw2 becomes equal with a main reference voltage Vmain, a first period voltage generating circuit 74 starts a first monotonous ...  
JP4057438B2
A multiplicity of electronic devices is provided to generate triangular wave signals variable between an upper and lower limit voltages by charging or discharging capacitors. One of the triangular wave signals serves as a master triangul...  
JP2008035570A
To provide a signal processing circuit in which a large current does will flow, even when the target value and observed value agree, and increase in power consumption is reduced, and which is suitable for integration.A signal processing ...  
JP2008028831A
To provide a voltage-controlled oscillator obtaining an oscillation signal with a comparatively low frequency using neither AGC means nor a semiconductor internal resistance with a simple configuration.The voltage-controlled oscillator i...  
JP2008503905A
The oscillating dynamics of the lower olive (IO) nerve discovered in a cerebral olive cerebellum network is reproduced, and it is applied to various control applications. IO neural model which generates semi- sine wave vibration on chara...  
JP2008022076A
To provide an oscillation circuit capable of fully swinging with low power consumption by using a comparatively simple circuit configuration.The oscillation circuit 10 comprises an oscillation core block 100, a voltage limit bock 120, an...  
JP3138669U
[Subject] A comparison machine used for an oscillator circuit is provided. [Means for Solution] It is a comparison machine which uses for an oscillator and has fixed reference voltage, and is a comparison machine, Source current is forme...  
JP4032066B2
A semiconductor integrated circuit includes a voltage generating circuit configured to generate a predetermined voltage, an NMOS transistor configured to receive at a gate node thereof the predetermined voltage generated by the voltage g...  
JP4025434B2  
JP2007325273A
To provide a super-low power RC oscillator capable of prolonging a service life of a battery in a mobile system using the RC oscillator. The super-low power RC oscillator includes a current generating unit 310 which includes a current so...  
JP4017537B2  
JP2007311969A
To provide an oscillation circuit in which the supply voltage dependency of an oscillation frequency is suppressed. A charge and discharge circuit 10 can switch between an initialization operation for setting the initial voltage of disch...  
JP2007312017A
To provide an oscillator circuit capable of generating a prescribed period of oscillation signal without being affected by a variation in capacity characteristics due to a variation in a threshold voltage Vth. The oscillator circuit incl...  
JP2007288419A
To provide an oscillator which is capable of obtaining an oscillation output of high precision having less variance in oscillation period in spite of the variance in threshold voltage among MOS transistors during manufacturing. Each circ...  
JP2007282189A
To reduce the number of parts of an amplifier circuit for obtaining a sawtooth wave and a triangular wave. A time-constant capacitor C is connected between an emitter-follower output resistor Ra and a time-constant resistor R to generate...  
JP2007279198A
To smoothly generate a ramp signal with low power consumption. A smoothing circuit 12 which smoothes a voltage Vout and outputs a voltage Vrp is arranged behind a ramp signal generating circuit 10 which generates a voltage Vout rising or...  
JP3998394B2
A switching regulator, by turning a switching device on and off, converts the level of a direct-current voltage fed in via an input terminal, and then feeds out the thus level-converted voltage via an output terminal. A waveform shaping ...  
JP3997248B2
A clock circuit includes an oscillator (15) for generating a reference frequency signal, and a spread spectrum clock generator (14) cooperating with the oscillator for generating a spread spectrum clock output signal having a fundamental...  
JP2007274743A
To obtain an oscillation circuit for generating triangular waves having different frequencies, phases or amplitude widths synchronously with a standard triangular wave in generating a plurality of the triangular waves. When voltages VC1 ...  
JP3991863B2
A sawtooth wave generating apparatus includes a base frequency generating section and a frequency generating section for generating the frequency of a reference signal, a sawtooth wave forming section which forms a sawtooth wave based on...  
JP2007266763A
To provide a PWM output circuit ensuring high precision control without generating jitter on the PWM output signal waveform with small circuit scale and inexpensively. The PWM output circuit comprises a counter, a period storing section,...  
JP2007267361A
To provide a voltage-controlled oscillator and a voltage controlled oscillating method capable of allowing a control voltage to be inversely proportional or directly proportional to an oscillation frequency, without complicating the conf...  
JP2007266908A
To realize spread spectrum modulation and pulse width modulation in a pulse signal generating circuit. A digital random signal S0 output from a pseudo-random number generator 10 is converted into an analogue random voltage S1 through a D...  
JP2007251376A
To generate a rectangular wave having a constant duty ratio at all times. The oscillation circuit comprises an oscillator for oscillating a rectangular wave by comparing a saw-tooth wave with a reference voltage, and a negative feedback ...  
JP3982342B2
The integrating circuit of the triangular wave generating circuit includes an operational amplifier and a capacitor. Switch elements are alternatively turned ON and capacitors are alternatively recharged by the currents flowing in consta...  
JP3981612B2  
JP2007243992A
To provide a circuit and a system for ramping a voltage across a load (506). This circuit and the system include a charging circuit (500) for charging a capacitor (501) to generate a ramp-up waveform. A circuit (511) selectively decouple...  
JP2007243922A
To provide an oscillation circuit capable of providing signals of stable cycles even if noise is generated. In the oscillation circuit of the Fig. 1, a high-level signal is inputted to a S terminal of a RS flip-flop circuit 108 when a vo...  
JP2007235188A
To provide a triangular wave oscillation circuit which stably oscillates a triangular wave having a desired frequency even if it has a built-in capacitor. The triangular wave oscillation circuit has: a built-in capacitor 16 having an out...  
JP3970839B2
To provide a non-linear load boosting circuit that can adjust the amplitude of triangular waves, based on the difference between a feedback voltage and a reference one, thereby to sufficiently shorten the time for reaching a steady state...  
JP3972865B2  
JP2007221752A
To provide a drive control apparatus which can turn off an output transistor reliably when it is not necessary to operate it, in a configuration that a communication signal is transmitted by driving the output transistor based on a trape...  
JP3965608B2
To provide a low pressure fluorescent lamp control device at low cost with high integration, equipped with a floating switching circuit responding to an intelligent switching circuit. A control switch has a first and second switch circui...  
JP3965171B2
To provide a multiple phase triangle wave oscillation circuit which can oscillate and output multiple phase triangle waves in relation of waveforms, wave peak values, and phases as specified, and stably and surely oscillates and outputs ...  
JP2007214643A
To provide a communication driver circuit in which a communication signal waveform capable of reducing a noise level can be generated in an IC by a simpler configuration. An output stage of the communication driver circuit 27 is composed...  
JP2007215021A
To provide a phase adjustment circuit and a phase adjustment method by which variation of a phase shift amount is prevented even when frequency of carrier waves for transmitting a sensor signal is varied. A triangular wave conversion cir...  

Matches 551 - 600 out of 4,464