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Wien Bridge Oscillator - Tutorialspoint
https://www.tutorialspoint.com/sinusoidal_oscillators/sinusoidal_wien_bridge_oscillator.htm
The circuit construction of Wien bridge oscillator can be explained as below. It is a two-stage amplifier with RC bridge circuit. The bridge circuit has the arms R1C1, R3, R2C2 and the tungsten lamp Lp. Resistance R3 and the lamp Lpare used to stabilize the amplitude of the output. The following circuit diagram shows the arrangement o…
The Wien Bridge - Learn About Electronics
https://www.learnabout-electronics.org/Oscillators/osc33.php
The Wien Bridge oscillator produces a sine wave output with very low distortion, but if the amplifier’s closed loop gain remains greater than 1 (3 x 1/3) once the oscillator is running, the amplitude of the oscillations will keep increasing, driving the amplifier towards saturation and causing distortion.
A simple "Wien bridge" audio oscillator
https://www.robkalmeijer.nl/techniek/electronica/radiotechniek/hambladen/qst/1946/10/page29/index.html
Fig. 1. Essentials of the "Wien bridge" oscillator circuit. Frequency is determined by the values of R and C; oscillation amplitude by the proportion of the output voltage fed back to the cathode of V1. The Wien bridge oscillator need be only a very simple device, as shown in Fig. 1.
Wien Bridge Oscillators - Learn About Electronics
https://www.learnabout-electronics.org/Oscillators/osc34.php
The Wien Bridge oscillator can still be built using similar principles to the early Hewlett Packard versions, but with modern components. Fig. 3.4.1 shows a basic Wien Bridge Oscillator using a filament lamp with an op amp. It is a property of filament lamps that the resistance of the tungsten filament increases in a non-linear manner as the ...
Wien Bridge Sine Wave Oscillator / Generator » …
https://www.electronics-notes.com/articles/analogue_circuits/operational-amplifier-op-amp/wien-bridge-sine-wave-oscillator-generator.php
The Op amp Wien Bridge sine wave oscillator or generator is an excellent circuit for generating a sine wave signal at audio frequencies and above. One of the popular methods of generating a sine wave with an operational amplifier is to use the Wien bridge configuration. The electronic circuit design is quite easy and it provides good overall ...
Budget Wien bridge oscillator with low THD | MyElectrons
http://myelectrons.com/wien-bridge-oscillator-low-thd/
At the power up the C3 is discharged and therefore VT1 channel is "open", resulting in the highest possible gain of approximately 3.5. That is just right for the circuit to start oscillating smoothly. High accuracy sine wave oscillator based on the Wien bridge. R1, R2 = 100 kOhm. C1, C2 = 1 nF = 1000pF. R4 = 10 kOhm. R3 = 3.9 kOhm.
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