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Hartley Oscillator Circuit Theory Working and Application

Hartley Oscillator Circuit Theory Working and Application. Hartley Oscillator Circuit Theory Working and Application. Introduction:.

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Hartley Oscillator Circuit Theory Working and Application

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  1. Hartley Oscillator Circuit Theory Working and Application

  2. Hartley Oscillator Circuit Theory Working and Application Introduction: • The Hartley oscillator is an electronic oscillator circuit in which the oscillation frequency is determined by the tuned circuit consisting of capacitors and inductors, that is, an LC oscillator. The Hartley oscillator was invented by Hartley while he was working in the Research Laboratory of the Western Electric Company. The circuit was invented in 1915 by American engineer Ralph Hartley. http://www.elprocus.com/

  3. Hartley Oscillator Circuit Theory Working and Application What are Hartley Oscillators? • Hartley oscillator is inductively coupled. • It's a variable frequency oscillators where the oscillator may be a series or shunt fed. • Hartley oscillators is the advantage of having one tuning capacitor and one center tapped inductor. • This processor simplifies the construction of a Hartley oscillator circuit. http://www.elprocus.com/

  4. Hartley Oscillator Circuit Theory Working and Application What are Hartley Oscillators? Hartley Oscillator http://www.elprocus.com/

  5. Hartley Oscillator Circuit Theory Working and Application Hartley Oscillator Circuit and Working • The circuit diagram of a Hartley oscillator consists of an NPN transistor connected in a common emitter configuration. • It works as the active device in amplifier stage. • R1 and R2 are biasing resistors. • CC1 and CC2 are the coupling capacitors • L1 and L2 are Inductance. http://www.elprocus.com/

  6. Hartley Oscillator Circuit Theory Working and Application Hartley Oscillator Circuit and Working • RFC is the radio frequency choke. • Which provides the isolation between AC and DC operation. • At high frequencies, the reactance value of this choke is very high. • So, it can be treated as an open circuit. http://www.elprocus.com/

  7. Hartley Oscillator Circuit Theory Working and Application Hartley Oscillator Circuit and Working • The reactance is zero for DC condition, hence causes no problem for DC capacitors. • The CE is the emitter bypass capacitor. • RE is also be a biasing resistor. • The CC1 and CC2 are the coupling capacitors. http://www.elprocus.com/

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