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WO/2009/020984A1 |
A multiple output DC-to-DC voltage converter using a new time- multiplexed-capacitor converter algorithm and related circuit topologies is herein disclosed. One embodiment of this invention includes a flying capacitor, a first output nod...
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WO/2008/148024A1 |
A communication system (20) comprises a transmitter (22) and a receiver (24). The transmitter (22) comprises a source of information symbols (30); a pulse shaping wave function generator (32); and a combiner (34) configured to express th...
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WO/2008/125403A1 |
The invention relates to a device for modulating signals by symmetric pulse widths with three levels. The device comprises harmonic distortion correction circuits consisting of circuits (202) modelling the behaviour of the conversion of ...
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WO/2008/092033A1 |
A triangular waveform generator includes a square waveform clock circuit and an active integrator. The active integrator receives input from the square waveform clock circuit and generates a triangular waveform output. An active feedback...
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WO/2008/089269A2 |
A dual differential sawtooth signal generator (106) includes a first sawtooth voltage generator (150) that has a first capacitor (178) and a second capacitor (196) that are alternately charged with a feedback control source current (Ireg...
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WO/2008/076773A2 |
A sawtooth voltage generator (100) has a first capacitor (156) that is charged with a variable feedback control current to provide a sawtooth output signal with a controlled amplitude. A feedback loop includes a comparator (110) that com...
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WO/2008/036542A1 |
A circuit can include an oscillator core that outputs, in response to a bias signal, a periodic signal having an oscillation frequency; a bias circuit that, when powered, provides the bias signal (e.g., a voltage) to the oscillator core;...
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WO/2008/032782A1 |
[PROBLEMS] To provide, for example, a pulse input type power amplifying unit that can be operated at low voltage and low power, effectively inhibiting any generation of harmonic component. [MEANS FOR SOLVING PROBLEMS] The amplifying unit...
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WO/2008/029509A1 |
A charging/discharging circuit (32) charges or discharges a capacitor (C2) having an end the potential at which is fixed. A first comparator (COMP1) compares an output voltage (Vout) of the capacitor (C2) with a first threshold voltage (...
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WO/2008/026314A1 |
To enhance the precision of the period of pulse signals. In response to a level transition at which a second period voltage (Vsaw2) has become equal to a main reference voltage (Vmain), a first period voltage generating circuit (74) init...
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WO/2007/142301A1 |
An oscillation circuit includes: a triangular wave generation circuit for generating a triangular wave signal according to an output clock signal; a comparison circuit for generating a clock signal in accordance with a comparison between...
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WO/2007/135491A1 |
A LIN network (600) comprises a transmit driver (610) for communicating on a single communication bus (615) . A slope control module (650) is operably coupled to a supply voltage (640) and in the case of voltage transition controls the t...
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WO/2007/113376A1 |
A circuit for rounding the edges of a digital pulse so as to reduce interference has a first rounding block (U1), a second rounding block (U2) and an output stage. The first rounding block (U1) rounds the second and fourth pulse edges so...
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WO/2007/108348A1 |
A voltage controlled oscillator circuit wherein a voltage/current converting circuit (310), which generates an input voltage converted current in accordance with an input voltage, is cascaded with a current controlled oscillator circuit ...
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WO/2007/072307A1 |
An electronic circuit comprises a delay circuit that with a chain of saw tooth delay stages (10a-d), coupled in a loop to form an oscillator for example. Each stage comprises an integrating circuit (104) and a current modulator (106) cou...
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WO/2007/058217A1 |
A first comparator (32) compares an output voltage (Vout) to appear in a capacitor (C2) with the maximum threshold voltage (Vmax). A second comparator (34) compares the output voltage (Vout) with the minimum threshold voltage (Vmin). An ...
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WO/2007/040814A1 |
A clock oscillator system for use in providing the switching regulator duty cycle control in a fixed frequency (no cycle skipping) operation is provided. In one embodiment, the circuit according to the invention uses an analog feedback l...
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WO/2006/137034A1 |
A pseudo-sine signal generation device (D) comprises i) a differential tunable integration means (SI) arranged to generate differential triangular signals (TS) with a chosen constant output amplitude from input differential square signal...
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WO/2006/121065A1 |
A switching control IC (11) comprises a circuit generating a triangular wave at a frequency dependent on a capacitor (Co) connected with its CT terminal and a resistor (Ro) connected with its RT terminal. A circuit (10) for inputting a p...
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WO/2006/116710A2 |
A system and method are provided for driving a power field-effect transistor (FET). In one embodiment, a system comprises a control circuit (54) that generates a control signal (56) to provide a gate voltage of the power FET. The system ...
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WO/2006/112792A1 |
An apparatus for generating a monocycle comprises an input signal source (76) for providing an input signal, and a step recovery diode (SRD) (80) for receiving the input signal and producing an impulse. A shunt inductor (102) is provided...
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WO/2006/071197A1 |
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...
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WO/2006/015884A1 |
The invention relates to a method of operating an electronic valve (18), in particular an IGBT, wherein a process of changing a charging state of a control electrode (17) (in particular of an insulated gate) of the valve (18) is repeated...
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WO/2005/114831A1 |
An oscillator includes a series of N number of gm/C stages. The pair of output terminals of each gm/C stage is coupled to the pair of input terminals of the next gm/C stage except the pair of output terminals of the last gm/C stage is cr...
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WO/2005/091502A1 |
The invention relates to control circuitry for controlling a power electronic circuit comprising a current path that runs through a power semiconductor and a feeder. According to the invention, the inductivity of the feeder and/or a comp...
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WO/2005/060131A1 |
A reactance adjustment device includes: an electrode (123) for inducing an electric field in an electric field transmission medium (121); a resonator (7) for adjusting the reactance value; and adjustment signal generator (13) for alterna...
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WO/2005/001938A1 |
A reduction in current consumption by a step-up voltage generating circuit of a semiconductor integrated circuit during a standby time. The semiconductor integrated circuit comprises a pump circuit which generates a step-up voltage by st...
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WO2004062104B1 |
A sawtooth wave generating apparatus 1 includes a base frequency generating section 10 and a frequency generating section 20 for generating the frequency of a reference signal, a sawtooth wave forming section 30 which forms a sawtooth wa...
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WO/2004/073161A1 |
An electronic class-D amplifier with intrinsically low distortion employing modulation of the slopes of a triangular-wave carrier reference signal; the modulation being in proportion to the derivative of the input signal. The negation of...
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WO/2004/070948A1 |
In a plurality of electronic devices, a triangular signal varying between an upper limit level and a lower limit level is generated by charging/discharging a capacitor. A detection signal is generated when the triangular signal becoming ...
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WO/2004/068708A2 |
A signal generator (1) for generating a square waveform analogue voltage output signal comprises an on-chip DAC (12) which outputs the analogue voltage signal on an output terminal (5). On-chip first and second programmable registers (9,...
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WO/2004/059930A1 |
A transmitter (4) for a controlled-shape switched signal on a communication line (1) comprises a signal generator including a capacitor (19) and a feedback loop responsive to a voltage across the capacitor (19) and to an input signal (TX...
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WO/2004/042926A1 |
A capacitive charge pump (111) that can be implemented in such devices as e.g. a phase locked loop (PLL) (105). The charge pump includes at least one capacitor (211, 217) in the charge path and discharge path for limiting the amount of c...
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WO/2004/040758A1 |
A transmitter (4) for a controlled-shape switched signal on a communication line (1) comprises a signal generator including a capacitor (19) producing the switched signal to be applied to the line. The capacitor is charged by a charging ...
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WO/2004/025825A1 |
The present invention comprises an integral triangular voltage waveform generator (170, 180) and triangular to pseudo-sinusoidal current waveform converter (170, 180). The outputs of the present invention are preferably differential (130...
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WO/2004/023654A1 |
An oscillator circuit (60) has a comparator circuit (68) and a monitor and control circuit (80). The comparator (68) provides a periodic output signal. The monitor and control circuit (80) controls the voltage swing of the periodic outpu...
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WO2003055071A9 |
The invention relates to a circuit arrangement for the provision of an output signal with adjustable flank pitch, whereby the several, parallel inverter output stages (5, 6; 7, 8; 9, 10; 11, 12) are connected in parallel on the load side...
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WO/2003/017463A1 |
A sample and hold circuit (28) for receiving a signal comprising a plurality of pulses at node LS from a sensing circuit (ru) and a circuit for supplying a timing signal (26) for the sample and hold circuit and the sample and hold circui...
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WO/2003/015278A2 |
The invention relates to a device for controlling a switch element (T1, T2), comprising a signal source (3, 5) linked with the control input of the switch element to produce a control signal, a measuring element (8, 10) for detecting a m...
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WO/2002/091565A2 |
An analog signal amplifying method, an amplifier to output a first pulse of high level by comparing an input signal with a first sawtooth-wave having an amplitude greater than that of the input signal and determining that the first sawto...
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WO/2002/052533A2 |
A monitor deflection circuit includes a bipolar power transistor for applying power from a high voltage supply to a horizontal deflection coil. The monitor deflection circuit further includes a base drive circuit for selectively turning ...
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WO/2002/025816A1 |
The invention relates to a high-efficiency driver circuit for capacitive loads, which circuit comprises a drive portion (12) connected to at least one end (X) of a capacitive electric load (11) being applied a voltage waveform. Advantage...
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WO/2002/025815A1 |
The invention relates to an electric circuit for generating a periodic signal (CLK) comprising: a capacitor device (C), which has a first terminal (K1) and a second terminal (K2); a signal node (K3) that is connected, via a first switchi...
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WO/2002/015382A2 |
An oscillator includes a first sawtooth waveform generator for generating a first sawtooth waveform having a selectively started ramp portion and a second sawtooth waveform generator for generating a second sawtooth waveform having a sel...
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WO/2001/087020A1 |
A universal ballast control circuit allows a universal ballast to accommodate a gas discharge lamp within a relatively wide wattage range using a low-speed microcontroller. The control circuit drives the ballast to start, run and dim a p...
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WO/2001/082482A1 |
According to the invention, a frequency demultiplication circuit serves to generate wander or wander sequences having frequencies of less than 10 Hz and, in particular, less than 1 Hz. Said frequency demultiplication circuit receives, on...
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WO/2001/082483A1 |
In a waveform generator according to the first aspect of the invention, a repetitive non-linear waveform is generated by varying the number supplied to the pulse reduction circuit during the repetition period. Consequently, the pulse red...
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WO/2001/052413A1 |
An electronic circuit for switching an inductive load (10) by means of a bipolar transistor (1) whereby a switching signal is supplied to the base (5) of a switching transistor (1) via an LRC circuit (6, 7, 9). During switching off the L...
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WO2000041519B1 |
A secondary winding (LSEC) of a horizontal flyback transformer (IHVT) of a horizontal deflection circuit (20) develops a horizontal retrace pulse voltage (12). A secondary winding (43) of a second transformer (41) is coupled in series wi...
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WO/2001/026225A1 |
A current-controlled high frequency oscillator which includes an inverting logic gate (G1) having an input and an output (or, alternatively, three inverting logic gates connected in series), a fast diode (D1) connected between the input ...
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