Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7292093 | Envelope detector with DC level shifting An envelope detector that does not generate an undesirable DC offset at its DC output signal. An envelope detector according to the present teachings includes a circuit for performing a DC level shift on an AC input signal applied to the envelope detector such that ... | 11/06/2007 |
| 7277687 | Low power amplitude modulation detector An AM demodulator using totem pole complementary metal oxide semiconductor transistors having a feedback to provide a common gate voltage of approximately half that across the transistors in the totem pole. The AM demodulator used in a hearing assistance device and ... | 10/02/2007 |
| 7205832 | Temperature compensated, high efficiency, controlled input impedance diode detector A diode detector comprising a detector network adapted to detect and multiply the detected voltage coupled to a divider network that comprise diodes in equal number to the number of diodes in the detector network, provides a passive detector applicable to any applic... | 04/17/2007 |
| 6897719 | Demodulation circuit and demodulation method Two capacitors are provided for demodulating an amplitude-modulated signal and can be supplied with a signal that is rectified by a diode and that is at a voltage. The half-cycles of this signal are used for alternately charging the first or second capacitor using a... | 05/24/2005 |
| 6825715 | Temperature compensated, high efficiency diode detector A diode detector comprising a detector network adapted to detect and multiply the detected voltage coupled to a divider network that comprise diodes in equal number to the number of diodes in the detector network, provides a passive detector applicable to any applic... | 11/30/2004 |
| 6265940 | Detector and transmitter incorporating the detector A detector comprises a first diode for detecting a high-frequency signal applied to the detector, a bias unit for supplying a predetermined bias voltage to the first diode; a first resistor having an end connected to the bias unit and another end connecte... | 07/24/2001 |
| 6031419 | Demodulator for contactless chip card A contactless chip card, receiving binary data transmitted by radio frequency, includes a demodulator for the binary data. The demodulator includes a circuit for the detection of the transmitted signals, a rectifier circuit, a bandpass filter, two compara... | 02/29/2000 |
| 5469126 | I/Q-modulator and I/Q-demodulator An I/Q-modulator or I/Q demodulator circuit in which the modulating signals (2, 3) are input through the output phase transfer branches of the circuit. In relation to the RF-characteristics, a series resistor (16) and a series inductance (20) in the phase... | 11/21/1995 |
| 5418448 | Wide power range radiation monitor A wide power range radiation monitor includes a pair of diodes with their cathodes interconnected and with an additional capacitor coupled in parallel to one of the diodes. The detector, of the radiation monitor provides two outputs, a low power output an... | 05/23/1995 |
| 4502015 | Diode detector with linearity compensating circuit The detector circuit disclosed comprises a semiconductor diode bridge providing full wave output through an operational amplifier. The amplifier is enclosed within a feedback loop in which is interposed at least one diode matched to the detector diodes so... | 02/26/1985 |
| 4320346 | Large dynamic range low distortion amplitude modulation detector apparatus An amplitude modulation detection apparatus utilizing a balanced diode rectifier circuit to detect amplitude modulation on HF and VHF amplitude modulated carrier frequencies at rates approaching to the carrier frequency without diagonal clipping. A temper... | 03/16/1982 |
| 4319196 | Temperature compensated wide dynamic range linear envelope detector An amplitude modulation detection apparatus that includes an envelope detector portion having a pair of diode rectifiers electrically connected at their cathodes which common cathode connection is connected through a series resistor to the input of a low-... | 03/09/1982 |
| 4258327 | Detector circuit with integrating feedback means An envelope detecting circuit capacitively connected to a signal source and arranged to counteract the effect of d-c potential shifts at the interconnection of capacitor and detector. A portion of the detected signal is integrated to provide a signal prop... | 03/24/1981 |
| 4249134 | Radio frequency detectors A radio frequency detector uses a Schottky barrier diode as the detection element. In order to protect this diode against damage caused by the application of excessive power, a NIP diode is connected in shunt with the Schottky barrier diode and is positio... | 02/03/1981 |
| 4001702 | High speed FM and AM demodulator A high speed arrangement for simultaneously demodulating the AM and FM information coming in on a tone frequency carrier. In the case of the incoming tone signal being only FM modulated, the FM demodulator extracts the data whereas the AM demodulator prov... | 01/04/1977 |
| 4000472 | Amplitude modulation envelope detector with temperature compensation An amplitude modulation envelope detector comprised of a basic voltage doubler envelope detector whose linear dynamic range is increased by a forward bias network and for which the offset voltage is stabilized by temperature drift compensation provided by... | 12/28/1976 |
