 Schematic diagram The Hartley oscillator is an LC electronic oscillator that derives its feedback from a tapped coil in parallel with a capacitor (the tank circuit). Although there is no requirement for there to be mutual coupling between the two coil segments, the circuit is usually implemented as such. A Hartley oscillator is essentially any configuration that uses a pair of series-connected coils and a single capacitor (see Colpitts oscillator for the equivalent oscillator using two capacitors and one coil). It was invented by Ralph Hartley, who filed for a patent on June 1, 1915 and was awarded patent number [1] 1,356,763 on October 26, 1920. I made this. ...
An inductor is a passive electrical device employed in electrical circuits for its property of inductance. ...
Capacitors: SMD ceramic at top left; SMD tantalum at bottom left; through-hole tantalum at top right; through-hole electrolytic at bottom right. ...
An electronic oscillator is an electronic circuit that produces a repetitive electronic signal, often a sine wave or a square wave. ...
A coil is a series of loops. ...
Capacitors: SMD ceramic at top left; SMD tantalum at bottom left; through-hole tantalum at top right; through-hole electrolytic at bottom right. ...
Categories: Technology stubs ...
A Colpitts oscillator, named after its inventor Edwin H. Colpitts, is one of a number of designs for electronic oscillator circuits. ...
Ralph Vinton Lyon Hartley (November 30, 1888 - May 1, 1970) was an electronics researcher. ...
A patent is a set of exclusive rights granted by a state to a person for a fixed period of time in exchange for the regulated, public disclosure of certain details of a device, method, process or composition of matter (substance) (known as an invention) which is new, inventive, and...
June 1 is the 152nd day of the year in the Gregorian calendar (153rd in leap years), with 213 days remaining. ...
1915 (MCMXV) was a common year starting on Friday (see link for calendar). ...
October 26 is the 299th day of the year (300th in leap years) in the Gregorian Calendar, with 66 days remaining. ...
1920 (MCMXX) was a leap year starting on Thursday (link will take you to calendar) // Events January January 3 - Babe Ruth is traded by the Boston Red Sox to the New York Yankees for $125,000, the largest sum ever paid for a player at that time. ...
Hartley oscillators may be series or shunt fed. A Hartley oscillator is made up of the following:
Advantages of the Hartley oscillator include: An inductor is a passive electrical device employed in electrical circuits for its property of inductance. ...
Three-phase pole-mounted step-down transformer. ...
- The frequency is varied using a variable capacitor
- The output amplitude remains constant over the frequency range
- The feedback ratio of the tapped inductor remains constant
Disadvantages include: - Harmonic-rich content of the output
- It is not suitable for a pure sine wave
In trigonometry, an ideal sine wave is a waveform whose graph is identical to the generalized sine function y = Asin[ω(x − α)] + C, where A is the amplitude, ω is the angular frequency (2π/P where P is the wavelength), α is the phase shift, and C...
Uses
 Part of Scott 310E circuit diagram The Hartley oscillator was extensively used on all broadcast bands including the FM 88-108MHz band. An example is given of the Scott 310E RF oscillator for its FM section. Image File history File links Scott310E_hartley. ...
The broadcast band is actually several chunks of the radio spectrum. ...
See also The Armstrong Oscillator is named for Edwin Armstrong, its inventor. ...
A Colpitts oscillator, named after its inventor Edwin H. Colpitts, is one of a number of designs for electronic oscillator circuits. ...
The Clapp oscillator is one of several types of electronic oscillator constructed from a transistor (or vacuum tube) and a positive feedback network. ...
References - Radiotron Designer's Handbook, 4th edition
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