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7583113 Sawtooth oscillator having controlled endpoints and methodology therefor  
A controlled endpoint sawtooth waveform generator and methodology is implemented by a circuit that uses charge sharing between capacitors to produce a sawtooth having one or both endpoints that are...
7557602 Pre-emphasis circuit including slew rate controllable buffer  
A pre-emphasis circuit capable of controlling the slew rate of a signal output from a buffer that transfers the output signal to an output driver to increase the range of a controllable voltage...
7508243 Triangular wave generation circuit  
An accurate intermittent triangular wave signal without waveform distortion is generated by a triangular wave generation circuit 1 including a rectangular wave generation circuit 111 for...
7362149 Zero crossing detection and correction upon a distorted primary AC power line voltage  
Zero crossings for a non-symmetrical V IN may be determined by first amplifying and clipping V IN to create a non-symmetrical square wave whose zero crossings are those of V IN . A selected...
7336110 Differential amplitude controlled sawtooth generator  
A dual differential sawtooth signal generator includes a first sawtooth voltage generator that has a first capacitor and a second capacitor that are alternately charged with a feedback control...
7271632 Controlled slope voltage ramp generator  
A ramp generator is provided that includes an amplifier, first and second transistors, a variable resistive load having a control electrode, and a capacitor. The amplifier has an inverting input...
7251290 Adaptive controller for linearization of transmitter  
A bank of complex gain elements is used to provide a step-wise approximation of an arbitrary complex-gain predistortion function for a nonlinear transmitter. The bank of gain elements is in an...
6930520 High bandwidth feed-forward oscillator  
A high bandwidth, feed-forward oscillator generates a ramp or sawtooth voltage for controlling the operation of a pulse width modulator-based, switched DC power supply circuit. The oscillator is...
6909417 Shift register and image display apparatus using the same  
A level shifter 13 is provided for each of SR flip flops F 1 constituting a shift register 11. The level shifter 13 increases a voltage of a clock signal CK. This arrangement reduces a...
6819154 Constant deadtime control in a feed forward enabled pulse width modulator controller  
A feed forward pulse width modulator compares a ramp signal with a control voltage to control respective states of a pulse width modulation signal. A respective cycle of the ramp signal is...
6633193 Method of forming a switching device and structure therefor  
A switching device ( 20 ) is formed to generate a ramp voltage by using a capacitor ( 48 ) formed on the semiconductor die ( 90 ) with the switching device ( 20 ). The switching device ( 20 )...
6456127 Adaptive pulse frame rate frequency control for minimization of electro-magnetic contamination in integrated switching amplifier systems  
A system and method of integrating switching amplifiers into systems with low amplitude front-end tuners to eliminate shielding and EMI filtering associated with signals, power and ground. An...
6339349 Method and circuit for comparator-less generation of ramped voltage having controlled maximum amplitude  
A circuit for generating a ramped voltage having controlled maximum amplitude (e.g., for use in a switching controller), and a method for generating such a ramped voltage without use of a...
5955903 Folded ramp capacitance circuit with current source and comparator circuit  
A frequency-to-current converter includes several capacitances with capacitive values that are effectively multiplied. After each of a series of periodic pulses, the voltage on a "ramp" capacitance...
5929671 Waveform generator  
A novel waveform generating for generating a waveform having symmetrical rise and fall times. The waveform generator of the present invention includes a first current source, a second current...
5642066 Linear ramp generator having two voltage controlled current sources  
An ultra-linear chirp generator includes a voltage controlled oscillator (VCO) having a tuning characteristic which is naturally nonlinear, a linear ramp generator which generates a linearly...
5585753 Sawtooth generator and signal interpolating apparatus using the same  
A sawtooth generates a sawtooth wave having a high response speed and good linearity with a simple arrangement in converting a change in phase of an input signal into a linear level change. A...
5585752 Fully integrated, ramp generator with relatively long time constant  
A circuit for dividing a reference current is composed of a number n of transistors connected in cascade, in a Darlington configuration, between current generator and a fractionary current output...
5502419 Pulse width modulation signal generation and triangular wave signal generator for the same  
A triangular wave generator circuit having a triangular wave generator unit for generating a triangular wave signal, and a comparator for comparing the generated triangular wave signal with a...
5502410 Circuit for providing a voltage ramp signal  
A circuit (10) for generating a voltage ramp signal (V RAMP ) having minimum amplitude variation over a large frequency range has been provided. The circuit includes a comparator (40) for comparing...
5394020 Vertical ramp automatic amplitude control  
A vertical ramp generator includes a voltage controllable charge current source and a switched discharge current source coupled across a ramp capacitor. A pair of comparators coupled to first and...
5049759 Signal processing system for period-to-voltage conversion  
A signal processing system employs a triangular signal generator for generating an alternating polarity triangular signal having a positive and negative peak level which is variable depending upon...
5015960 Method of generating a voltage with a triangular wave form  
A method for generating a voltage with a triangular waveform which is independent of frequency. Two oppositely-phased voltages with sawtooth waveforms are added together in an adding circuit. These...
5013931 Programmable triangle wave generator  
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...
4990833 Self-adapting vertical scan circuit for raster-scanned cathode ray tube displays  
A vertical scan circuit for a display is described which allows automatic picture height and centering. The deflection voltages at the start and end of active video time, are stored by capacitors...
4978866 Ramp circuit for control loop  
A ramp circuit for a control loop which receives a signal from a controller and sends a signal to a controllable means to limit the slew rate of the controller signal. A capacitor functions as a...
4859872 Synchronizing signal processing circuit  
An input synchronizing signal is subjected to mean DC voltage adjustment so that the mean DC voltage thereof becomes a prescribed level. The input synchronizing signal after the mean DC voltage...
4851709 Variable frequency, fixed amplitude digital sweep generator  
A variable frequency, fixed amplitude digital sweep generator for use with a cathode ray tube based instrument useful in troubleshooting, diagnosing, and servicing spark ignition internal...
4728813 Timebase generator with improved linearity and recovery time  
A timebase generator includes a transistor switch performing a sweep gate function, alternately providing a current path for retrace and then disconnecting such current path to allow generation of...
4585951 Precision triangle waveform generator  
A triangle waveform generator having precise edges is provided. A switched voltage controlled current source portion is coupled to an integrator circuit for providing the triangular output...
4524334 Triangle waveform generator  
A triangle waveform generator having a comparator which drives an integrator via a limiter is disclosed. At the output of the integrator, the desired triangular waveform voltage is present. The...
4513256 Swept frequency signal generator  
A sweep voltage from a sweep voltage generator is provided to sweep start and stop adjusting means, the outputs of which are summed by a summing circuit and, by the summed output, the oscillation...
4438466 D.C. Controlled adjustable ramp signal generator and method  
Circuit and method for providing a D.C. controlled adjustable ramp signal which maintains a predetermined ramping period for respectively adjusted optimum signal levels within the operating range....
4284906 Constant amplitude variable frequency synchronized linear ramp generator  
A constant amplitude, variable frequency, synchronized, linear ramp generr is disclosed for generating a sawtooth waveform signal, whose amplitude is independent of frequency. A capacitor is...
4283637 Signal generator  
A control circuit is adapted to control the movement of a pintle relative to the die head of extrusion apparatus. A command signal is supplied to a signal generator, which produces a first output...
4220927 Electrical signal converter usable in triangular waveform generation  
A signal having instantaneous voltage values, defined by a peak-to-peak voltage magnitude and a D.C. offset voltage level, is converted into another signal having time corresponding waveform...
4183278 Driver circuit for tone generator  
A driver circuit for a tone generator that is adapted to cause the tone generator to produce a pleasant sounding chime. The circuit comprises high and low frequency oscillator circuits whose...
4181877 Inertia compensated static motor drive  
A load is driven by a statically controlled motor drive so as to follow a linear ramp characteristic recurrently, and a jump is caused to occur after each peak of the controlling ramp signal in...
4130786 Apparatus for generating linear and continuous positional error and velocity signals for higher order servo systems  
A higher order servo system including a phase transducer which produces two triangular waveforms, phase displaced 90° in relation to each other, representing the positions of a movable member, and...
4078252 Ramp generator  
A ramp generator for driving a bar graph display which utilizes a feedback circuit to set its maximum level of the ramp.
4071776 Sawtooth voltage generator for constant amplitude sawtooth waveform from varying frequency control signal  
A generator of recurrent ramp voltages in response to a pulse train. It includes a circuit for ensuring that the output voltage of the generator reaches its maximum value just prior to the...
4047052 Circuit arrangement for regulating the amplitude of a sawtooth generator  
An arrangement for regulating the amplitude of a sawtooth generator employs a capacitor which is periodically charged and discharged by a current source by way of a switch, the switch being...
4041405 Sawtooth waveform generator  
A generator for generating sawtooth waveforms having equal excursion of predetermined amplitude about a reference level, synchronized in frequency with the zero crossings of an AC signal. The AC...
4002992 Amplitude control for sawtooth wave form  
A sawtooth wave form generating circuit in which the amplitude of the sawtooth wave form is automatically maintained at a constant value by passing the same through a variable gain amplifier,...
3932817 High voltage triangular waveform generator  
A high-voltage-level Miller circuit is employed, with capacitive coupling between the input current source and the amplifying device, and between the output terminal of the amplifying device and...
3866065 Waveform control circuit using gain-controlled amplifier stage  
A circuit using a slope generator and an inverter providing biases for a work including a parallel combination of series connected diodes and resistors. The network is connected between a voltage...
3859603 TRIANGULAR GENERATOR  
A triangular voltage is generated by charging and discharging a capacitor by means of a switchable current generator. The output current of the current generator is detrmined proportionally by a...
3836856 SYSTEM FOR LIMITING THE RANGE OF A-C SIGNALS  
A sinusoidal signal voltage of varying amplitude V i is compared with a triangular voltage wave of relatively elevated frequency and amplitude to generate a binary voltage with a first value for...
3808460 SAWTOOTH-VOLTAGE GENERATOR WITH FREQUENCY-INDEPENDENT AMPLITUDE  
A sawtooth-voltage generator includes a capacitance with a resistive charging circuit and a normally blocked discharge path which is periodically unblocked in response to a train of timing pulses,...
3796960 ELECTRONIC SIGNAL MULTIPLIER  
A frequency multiplier for frequency variable electronic signals for use with a fluid flow measuring system. The generally sinusoidal output signal from a fluid flowmeter is converted to a square...
Matches 1 - 50 out of 119 1 2 3 >