Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7348846 | Amplifier arrangement The present invention relates to an amplifier arrangement having a plurality of amplifier stages that form a series circuit. Each amplifier stage comprises a current mirror, the translation ratio of which defines the gain of the amplifier stage. Moreover, a current ... | 03/25/2008 |
| 6265938 | Linear high-voltage drive stage and cathode-follower high-fidelity power amplifier implementing same A novel drive stage provides with low distortion a large amplitude signal, such as required for driving a cathode-follower output stage of a power amplifier. The drive stage comprises an amplification substage and a load substage. Each substage comprises ... | 07/24/2001 |
| 6011439 | Low power RF amplifier A radio frequency amplifier includes a first amplifier stage having a first transistor, and a second amplifier stage having a second transistor. The first transistor has a base input for receiving an input voltage, a collector output, and an emitter coupl... | 01/04/2000 |
| 5859565 | Cathode-follower high-fidelity power amplifier A cathode-follower power output stage is driven by a novel drive stage to provide with low distortion the large signal required to drive the output stage. The drive stage comprises two series connected vacuum tubes which share the large static and dynamic... | 01/12/1999 |
| 5068624 | Amplifier In an amplifier using at least two transistors are amplifying elements, the bases (or gates) and the collectors (or drains) of the transistors are commonly connected. A first impedance element is connected between the bases (or gates) and the collectors (... | 11/26/1991 |
