A Colpitts oscillator is the electrical dual of a Hartley oscillator. The Hartley oscillator is an LC electronic oscillator that derives its feedback from a tapped coil in parallel with a capacitor. http://en.wikipedia.org/wiki/Colpitts_oscillator http://en.wikipedia.org/wiki/Hartley_oscillator ~MECHASUN~ A Colpitts oscillator is the electrical dual of a Hartley oscillator. The Hartley oscillator is an LC electronic oscillator that derives its feedback from a tapped coil in parallel with a capacitor. http://en.wikipedia.org/wiki/Colpitts_oscillator http://en.wikipedia.org/wiki/Hartley_oscillator ~MECHASUN~
Colpitts oscllators are preferred because the 'tap' can be set by fixed capacitors, while in a Hartley oscillator the coil is tapped.
clapp oscillator have frequency more stable and accurate than colpitts oscillator.
colpitts oscillator has two coils in series and one capacitor in parallel. hartley oscillator has one capacitor and one coil in parallel
1.CE amplifier circuit 2.LC oscillator circuit
Because it improves the frequency stability and eliminates the effect of transistor parameters on the operation of the circuit.
whatever works at the desired operating frequency
A Colpitts Oscillator is Two Hartley Oscillatorshttp://en.wikipedia.org/wiki/Colpitts_oscillator http://en.wikipedia.org/wiki/Hartley_oscillator ~MECHASUN~
An oscillator has a tuned circuit (inductance+capacitance) to determine the frequency. When the inductor is tapped to give the required phase-shift for oscillation it is a Hartley oscillator. When the capacitance is tapped it is a Colpitts.
advantages over what? Colpitts? Mostly the fact that it does not require a choke. A Hartley is more harmonic-rich than a Colpitts, so the main reason it is used lies in its (relative) ease of construction.
for radio frequnency ... and audio frequency. I have a Colpitts oscillator on a small piece of Veroboard 3/4"x 1/2"mounted on the terminals of a standard telephone earpiece. It uses the earpiece itslef as the inductor. The nominal impedance of the earpiece is about 300 ohms. With capacitors of 1μF and 0.47μF it oscillates at about 2kHz.
A Colpitts oscillator is the electrical dual of a Hartley oscillator. In the Colpitts circuit, two capacitors and one inductor determine the frequency of oscillation. The feedback needed for oscillation is taken from a voltage divider made by the two capacitors, where in the Hartley circuit the feedback is taken from a voltage divider made by two inductors (or a tapped single inductor). (Note: the capacitor can be a variable device by using a varactor). Oscillation frequency The ideal frequency of oscillation for the circuit is given by the equation: where the series combination of C1 and C2 creates the effective capacitance of the LC tank. Real circuits will oscillate at a slightly lower frequency due to junction capacitances of the transistor and possibly other stray capacitances
A. Russell Colpitts was born in 1906.
You could build a Tesla Coil and utilize the strong electric field but your probably talking about resonant magnetic induction. Consider the royer oscillator. I have been unsuccessful with it so far but it works. The colpitts oscillator works well too but don't expect a lot of power.
the Colpitts oscillator , named after the inventor of the circuit , is characterised by the use of Two Capacitors in series which are then connected in parallel across the inductor of the resonant circuit for obtaining the required frequency. The junction of the two capacitors is used for the positive feedback used for generating the oscillations. This circuit is used for High frequency oscillators , mainly due to ease of obtaining required ratio of the two capacitor values as per the circuit design. Also the two capacitors in series reduces their total equivalent value , which is not a problem as in HF circuits as the values and size is comparatively low. For information , a corresponding Low frequency circuit is called a Hartley oscillator , also named after its inventor. This uses a tapped inductor & one capacitor for the resonant circuit, since it is more easier to fabricate large value tapped inductors , than to use two bulky ( since the value of capacitors in series is reduced ) capacitors necessary for the equivalent Colpitts oscillator.
Phase-shift oscillator Armstrong oscillator Cross-coupled LC oscillator RC oscillator
Edward Colpitts Robinson has written: 'In an unknown land' -- subject(s): Accessible book, Description and travel
A local oscillator can be a crystal oscillator.
A: VIBRATOR IS A MECHANICAL OSCILLATOR oscillator is an electronic device
what is sub carrier oscillator?
A Wein Bridge Oscillator is a oscillator which is used for the measurement of Audio Frequency.
Advantages: Good wave purity Fine performer at high frequency Good stability at high frequency Wide operation range 1 to 60 MHz Disadvantages: Poor isolation (Load impedance v.s. frequency) Hard to design by samiur rahman hasib
that is the function of the oscillator
astable blocking oscillator
Wein Bridge oscillator application is a type of electronic oscillator. This electronic oscillator produces sine waves and long ranges of frequency.
oscillator frequency is different.crystal working piezo electric effect