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Patent No. 5979328

Vehicular Impact Signaling Device

An apparatus for the deployment of a visible plume to alert other motorists that a proximate motor vehicle has been involved in a collision.

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Class 331/159 - Plural tube


Subclass of Class 331 - Oscillators
Definition: Subject matter wherein the oscillator includes at least
No. of patents: 15
Last issue date: 05/13/2008


NumberTitleIssue Date
7372342Oscillator
A high-performance crystal oscillator providing effective bias resistors with low power consumption and minimal substrate surface area. In various embodiments of the invention, a switched-capacitor resistor is operably coupled to circuit components, such as an oscil...
05/13/2008
7071788Low power balanced Colpitts oscillator with improved negative resistance
A low power balanced Colpitts oscillator circuit with improved negative resistance. The oscillator circuit comprises two cross-coupled Colpitts oscillators with a crystal oscillator connected between the two oscillators. A single current source can be used for both ...
07/04/2006
6169460Oscillator mode suppression circuit
An oscillator circuit suppresses unwanted oscillation frequencies and allows oscillation in the selected frequency band. The circuit has less sensitivity to aging of components that cause a shift in operating frequency. The oscillator includes a first and...
01/02/2001
5787004Method for computer-assisted iterative determination of the transient response of a quartz resonator circuit
In the method, following an operating point determination of the quartz resonator circuit, a substitution of the equivalent circuit diagram of the quartz resonator by an independent current source is implemented with the initial, previously determined amp...
07/28/1998
5770980Fast starting oscillator
A low power, fast starting oscillator (10) of the Colpitts type includes an amplifier (12) that provides voltage gain and feeds a source follower circuit (14) that provides a desirable output impedance. A crystal (16) is coupled from an output of the sour...
06/23/1998
5621361One-pin integrated crystal oscillator
A one-pin integrated crystal oscillator in a Colpitts configuration employs a differential amplifier, provided with a feedback network, as an input gain stage. This achieves an enhanced stability and independence from temperature variation, a high Q figur...
04/15/1997
5010308Crystal oscillator with offset and hysteresis
An oscillator is provided with an internal, high gain hysteresis effect so as to offset the linear regions of the waveform and to avoid spikes upsetting the count of a reference divider controlling the oscillator. The crystal (10) and capacitor (11) are c...
04/23/1991
4845444Frequency doubling crystal oscillator via a current mirror
A crystal oscillator comprising a crsytal and an inverter amplifier which utilizes a current mirror to provide a voltage output having a frequency double the frequency of the voltage waveform present in the inverter amplifier....
07/04/1989
4743865Quartz-crystal microwave oscillator of the common-emitter transmission type with two transistors and a predetermined loaded Q factor
The resonant frequency of a quartz-crystal microwave oscillator is the fundamental frequency in the partial mode of the crystal and makes it possible to maintain the loaded Q of the resonator at a high value. This microwave oscillator is provided with two...
05/10/1988
4560955Monolithic integrated transistor HF crystal oscillator circuit
To increase the gain and, consequently, to increase the voltage amplitude appearing at the crystal of a crystal oscillator a conventional circuit including a first differential amplifier in the amplifier section and two further differential amplifiers in ...
12/24/1985
4550293Narrow deviation voltage controlled crystal oscillator
A narrow band, voltage controlled crystal oscillator having a linear frequency versus tuning voltage response. The oscillator uses a composite resonator in a novel circuit configuration with a resulting improvement in oscillator output signal frequency st...
10/29/1985
4139826Crystal overtone oscillator using cascade connected transistors
An overtone oscillator of the feedback type is provided by a transistor, a crystal resonant at a fundamental frequency and higher odd overtone frequencies, and a feedback circuit that includes the crystal, a second transistor connected in cascade with the...
02/13/1979
3996530Butler oscillator
An amplitude limiting amplifier followed by a filter network is interposed between the voltage amplification stage and the impedance matching stage in a Butler oscillator. This allows both the voltage amplification stage and the impedance matching stage t...
12/07/1976
3961284Oscillator control circuit
Disclosed is a circuit for locking a harmonic-rich oscillator, such as the crystal-controlled type, to provide as its output, a signal at a designated frequency characterized by minimum harmonic content and high stability. The circuit includes a combinati...
06/01/1976
3958190Low harmonic crystal oscillator
A colpitts oscillator having a tank circuit and a common base connected transistor, operating in a linear range, with an emitter-base junction coupled in the tank circuit and a load in the collector circuit thereof for passing current through the load at ...
05/18/1976
 
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