Quotables
"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"
David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 7639095 | Circuit and method for contact-less transmission A system includes a first and second circuit electromagnetically coupled to establish a contact-less transmission, for example, between a vehicle body and a removable seat of the vehicle body. The first circuit includes a first inductor and the second circuit includ... | 12/29/2009 |
| 7256920 | Electro-optic modulator A modulator circuit (28) for directing a voltage across a modulator element (26) to modulate a beam (20) includes a first inductor L1 that is electrically connected in parallel to the modulator element (26) and a second inductor L | 08/14/2007 |
| 7110738 | Direct digitally tunable microwave oscillators and filters A tunable element in the microwave frequency range is described that may include one or more tunable elements that are directly digitally controlled by a digital bus connecting a digital control circuit to each controlled element. In particular, each digital signal ... | 09/19/2006 |
| 6903617 | Method and apparatus for synthesizing high-frequency signals for wireless communications A semiconductor package includes a package substrate and an integrated circuit. The package substrate has a first surface. The integrated circuit couples electrically to the first surface of the package substrate. The integrated circuit and the package substrate tog... | 06/07/2005 |
| 6894575 | High-voltage oscillator having a fast response time A high-voltage oscillator including a first normally-on switch in series with a resonant circuit, a second normally-on switch in parallel with the resonant circuit, and a control circuit preventing the simultaneous conduction of the two switches. ... | 05/17/2005 |
| 6225872 | Resonator having a selection circuit for selecting a resonance mode A resonator includes a resonating device and a selection circuit for selecting a resonance mode. The selection circuit is formed by a first-order oscillator which is provided with a synchronization input and whose output is connected to the excitation inp... | 05/01/2001 |
| 5264809 | Oscillator circuit and proximity switch using A proximity switch which can detect any metal with equal changing rate of oscillating frequency, regardless of what kind of metal it may be (magnetic or nonmagnetic), is disclosed. The invention employs a series circuit consisting of a resistor and a firs... | 11/23/1993 |
| 4818953 | Oscillator improvement An improved oscillator circuit for avoiding core saturation without the need for auxiliary magnetic devices employs an emitter resistance for regulating base voltage, and a semiconductor base shunt for initiating transistor cut-off when the base voltage i... | 04/04/1989 |
| 4472755 | Resonant circuit which provides dual frequency excitation for rapid cycling of an electromagnet Disclosed is a ring magnet control circuit that permits synchrotron repetition rates much higher than the frequency of the cosinusoidal guide field of the ring magnet during particle acceleration. the control circuit generates cosinusoidal excitation curr... | 09/18/1984 |
| 4416365 | Coin examination apparatus employing an RL relaxation oscillator An apparatus for coin testing including an improved inductive sensing arrangement. A coin to be tested is passed through an electromagnetic field produced by an inductor which is part of a resistor-inductor type relaxation oscillator operating at a freque... | 11/22/1983 |
| 4354129 | Absorber for piezoelectric surface acoustic wave device A surface acoustic wave device includes a piezoelectric substrate, transmitting and receiving transducers provided on the surface of the substrate for propagating acoustic waves between the transducers, and absorbers provided between an end of the substra... | 10/12/1982 |
| 4348649 | Microwave power pulse generator A self-pulsing microwave generator with a quarter-wave resonator separated y an electron transit space from a field emission cathode is provided. The quarter-wave resonator acts as an anode and a DC voltage is supplied by a discharge capacitor and a DC cur... | 09/07/1982 |
| 4241317 | Frequency generator suitable for use as position-frequency transducer The resistance-inductance element used to determine the frequency of the frequency generator in the prior art circuits is replaced by an inductance-capacitance combination. As in the prior art circuits the frequency determining circuit is connected betwee... | 12/23/1980 |
