Statements (50)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
Electronic Instrument
|
| gptkbp:alternativeName |
Phase Sensitive Detector
|
| gptkbp:application |
gptkb:Scanning_Probe_Microscopy
gptkb:Vibration_Analysis gptkb:Magnetic_Resonance Electrical Impedance Spectroscopy Laser Experiments Optical Measurements Photodetector Readout |
| gptkbp:canBe |
Digital
Analog |
| gptkbp:commercialized_by |
Princeton Applied Research
Stanford Research Systems |
| gptkbp:component |
Low-pass Filter
Phase Shifter Multiplier Pre-amplifier Reference Oscillator |
| gptkbp:controlledBy |
Computer Interface
Front Panel |
| gptkbp:detects |
Weak Signals
|
| gptkbp:enables |
Measurement of Signals Below Noise Level
|
| gptkbp:focusArea |
Noise Outside Reference Frequency
|
| gptkbp:frequency |
Millihertz to Megahertz
|
| https://www.w3.org/2000/01/rdf-schema#label |
Lock-in Amplifiers
|
| gptkbp:inventedBy |
1940s
|
| gptkbp:operates |
Mixing Input Signal with Reference Signal
|
| gptkbp:opposedBy |
Out-of-phase Noise
|
| gptkbp:output |
Digital Data
DC Voltage Amplitude of Signal at Reference Frequency Phase of Signal at Reference Frequency |
| gptkbp:requires |
Reference Signal
|
| gptkbp:used_in |
gptkb:Acoustics
Astronomy Telecommunications Medical Devices Seismology Environmental Monitoring Material Science Industrial Testing Laboratory Research Physics Experiments Chemistry Experiments Engineering Measurements |
| gptkbp:usedFor |
Noise Reduction
Phase Sensitive Detection Signal Recovery |
| gptkbp:bfsParent |
gptkb:LabOne_Audio_Measurement_Suite
|
| gptkbp:bfsLayer |
7
|