Quotables
"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 7180378 | Tunable ring oscillator A tunable ring oscillator, in accordance with the teachings described herein, may include one or more delay circuits having a coarse tuning circuitry and a fine tuning circuitry. The coarse tuning circuitry may be used to set one of a minimum time delay or a maximum... | 02/20/2007 |
| 4672379 | Doppler radar transceiver A doppler radar transceiver comprising a transceiving module including a reflex circuit having a single transistor which simultaneously acts as both an oscillator and an amplifier. A capacitor and a resistor are provided in the transistor base element bia... | 06/09/1987 |
| 4470040 | Microvibration detector using a single piezoelectric element as both sensor and alarm generator An alarm device comprises a blocking oscillator circuit composed of a transformer and a transistor and a sound emitter using a piezoelectric effect exhibiting element and interposed between one end of the secondary coil of the transformer and a power sour... | 09/04/1984 |
| 4160953 | Self-oscillation mixer circuits A self-oscillation mixer circuit includes a cascade amplifier circuitry which is composed of a first transistor of a common emitter connection having a collector connected to an emitter of a second transistor of a common base connection, a filter circuitr... | 07/10/1979 |
| 4053839 | Method and apparatus for the frequency multiplication of composite waves A frequency multiplying system and method in which a time varying analog input signal is sampled and stored in a memory matrix at a predetermined rate. The signal thus stored is read out from the memory matrix at a different rate and reconstructed into a ... | 10/11/1977 |
