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Class 331/140 - R.C. or R.L. type


Subclass of Class 331 - Oscillators
Definition: Oscillators wherein the feedback network includes only capacitance
No. of patents: 12
Last issue date: 02/21/2012


NumberTitleIssue Date
8120436System and method for implementing an oscillator
In one embodiment, a system for generating an oscillating signal includes a transconductance amplifier comprising a single-ended output and a differential input. The system also includes only one feedback loop coupled to the transconductance amplifier. The feedback ...
02/21/2012
7157982Wien-Robinson oscillator with stabilized output voltage
In a Wien-Robinson oscillator, a negative feedback path and a positive feedback path are arranged between the output of an operational amplifier and a reference ground potential. The negative feedback path contains two resistors which are connected in series and who...
01/02/2007
7071710Extraction of interconnect parasitics
The apparatus for detecting the effects of interconnect resistance and capacitance (RC) in a logic circuit includes a first ring oscillator with the interconnect RC parasitics in a logic circuit and a minimum reference ring oscillator without the interconnect RC par...
07/04/2006
6590463RC oscillator circuit with stable output frequency
A RC oscillator circuit with a stable output frequency, having an oscillating integrated circuit working under an operation voltage, the resistor, a first capacitor, a second capacitor, and a transistor. The first and second capacitors construct a RC circ...
07/08/2003
6504436Transconductance tuning circuit with independent frequency and amplitude control
A tuning circuit includes an oscillator that receives an oscillating input signal and a control signal, and generates an oscillating output signal. The control signal is obtained from a frequency control circuit that compares the phases of the oscillating...
01/07/2003
6005449Ultra low-power fast start precision RC oscillator
An ultra-low power, fast start fuze oscillator contained in a fast moving projectile which contains a programmable projectile fuze. It is an RC oscillator which uses a low power comparator, three biasing resistors, a timing resistor and a timing capacitor...
12/21/1999
4485356Variable low frequency sinusoidal oscillator using simulated inductance
A low frequency sinusoidal oscillator, comprises a circuit which contains operational amplifiers, resistors and capacitors and has no inductor. The circuit, however, operates as an inductor. The circuit is arranged to resonate at a frequency which may be ...
11/27/1984
4430627Amplitude controlled sine wave oscillator
An amplitude control circuit of the invention includes a vector composition circuit (18) for composing a cosine-wave signal (e3) from a sine-wave signal (e1) and a control signal generation circuit (20) for providing a control signal (e4) from the sine- a...
02/07/1984
4188593RC Oscillator
An RC oscillator comprising an amplifier with a first RC voltage divider coupling its output circuit to its non-inverting input circuit and a second RC voltage divider coupling its non-inverting input circuit to its inverting input circuit. The first RC v...
02/12/1980
4091340Oscillator circuit arrangements including nullator-norator pairs
The invention relates to electrical oscillators arranged to oscillate so as to produce a substantially sinusoidal output signal. The said oscillator includes a general impedance transvertor circuit arrangement having two differential amplifiers connected ...
05/23/1978
4091341Oscillator circuit arrangements including nullator-norator pairs
The invention relates to electrical oscillators arranged to oscillate so as to produce a substantially sinusoidal output signal. The said oscillator includes a general impedance transvertor circuit arrangement having two differential amplifiers connected ...
05/23/1978
3933046Logarithmic resistance-to-frequency converter
By including four resistors and a capacitor in a bridge and connecting the bridge to the input terminals and the output terminals of a comparator amplifier a relaxation oscillator is obtained the square-wave frequency of which depends logarithmically upon...
01/20/1976
 
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