Wien bridge oscillator
E812208
The Wien bridge oscillator is an electronic sine-wave generator that uses a Wien bridge network in its feedback loop to produce low-distortion audio-frequency signals.
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
audio-frequency oscillator
ⓘ
electronic oscillator ⓘ sine-wave generator ⓘ |
| advantage |
good frequency stability
ⓘ
low noise ⓘ simple frequency adjustment ⓘ |
| amplitudeStabilizationMethod |
diodes
ⓘ
incandescent lamp ⓘ nonlinear resistance ⓘ thermistor ⓘ |
| basedOn | lead-lag RC network ⓘ |
| bridgeHasArms |
parallel RC arm
ⓘ
series RC arm ⓘ two purely resistive arms ⓘ |
| category | RC oscillator ⓘ |
| commonlyImplementedWith |
operational amplifier
ⓘ
transistor amplifier ⓘ vacuum tube amplifier ⓘ |
| designedBy | William R. Hewlett NERFINISHED ⓘ |
| disadvantage |
limited to relatively low frequencies
ⓘ
requires precise component matching ⓘ |
| feedbackNetworkType | bridge network ⓘ |
| firstCommercializedIn | HP 200A audio oscillator NERFINISHED ⓘ |
| frequencyControlledBy |
capacitor values
ⓘ
resistor values ⓘ |
| hasComponent |
amplifier
ⓘ
capacitor ⓘ nonlinear amplitude stabilizer ⓘ resistor ⓘ |
| hasFeedbackType |
negative feedback
ⓘ
positive feedback ⓘ |
| hasFrequencyFormula | f = 1 / (2πRC) ⓘ |
| hasTopology | bridge oscillator ⓘ |
| knownFor |
low distortion output
ⓘ
stable frequency ⓘ |
| notBasedOn | inductors ⓘ |
| operatesAt | audio frequencies ⓘ |
| requires | Barkhausen criterion for oscillation NERFINISHED ⓘ |
| requiresCondition |
loop gain equal to one at oscillation frequency
ⓘ
total phase shift of zero degrees around loop ⓘ |
| typicalDistortionLevel | low harmonic distortion GENERATED ⓘ |
| typicalOutputWaveform | sinusoidal GENERATED ⓘ |
| usedFor |
audio testing
ⓘ
laboratory instrumentation ⓘ measurement equipment calibration ⓘ signal generation ⓘ |
| usedIn |
audio equipment design
ⓘ
education and laboratory experiments ⓘ |
| uses | Wien bridge network ⓘ |
| yearOfFirstImplementation | 1939 ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.