Search results
Results from the WOW.Com Content Network
The Hartley oscillator is an electronic oscillator circuit in which the oscillation frequency is determined by a tuned circuit consisting of capacitors and inductors, that is, an LC oscillator. The circuit was invented in 1915 by American engineer Ralph Hartley .
English: Schematic diagram of Hartley oscillator circuit, using an op amp as the active device. Русский: Схема генератора ...
Typical LC oscillator circuits are the Hartley, Colpitts [2] and Clapp circuits. In a crystal oscillator circuit the filter is a piezoelectric crystal (commonly a quartz crystal). [2] [4] The crystal mechanically vibrates as a resonator, and its frequency of vibration determines the oscillation frequency.
Figure 5: Comparison of Hartley and Colpitts oscillators. If the two capacitors are replaced by inductors, and magnetic coupling is ignored, the circuit becomes a Hartley oscillator. In that case, the input impedance is the sum of the two inductors and a negative resistance given by
Ralph Vinton Lyon Hartley (November 30, 1888 – May 1, 1970) was an American electronics researcher. He invented the Hartley oscillator and the Hartley transform, and contributed to the foundations of information theory. His legacy includes the naming of the hartley, a unit of information equal to one decimal digit, after him.
But the San Francisco-based 9th U.S. Circuit Court of Appeals in its ruling blocked a part of the law that prohibits "recruiting" a minor to get an abortion. Idaho, which bans abortion in nearly ...
Main page; Contents; Current events; Random article; About Wikipedia; Contact us
A Florida man accused of a hate crime for killing a gay man is asking a judge to dismiss the charges, saying he acted in self-defense. Gerald Radford testified on Friday that he feared for his own ...