Phase and Frequency determination of electrical signals using a CRO (Lissajous Figures) Manufacturer,Supplier and Exporter in India
Product Code : SCL-EELE-12320
Indian Lab Suppliers supplies the Phase and Frequency determination of electrical signals using a CRO (Lissajous Figures) (Product ID: 12320) as part of its electronics engineering lab equipment range. It teaches the use of an analog CRO for measuring time period, amplitude, frequency and phase angle with Lissajous figures.
Quick Answer
The panel provides a known 50 Hz reference (3 V AC, 50 mA), an inductor, a capacitor and a resistance selector switch. Applying the 50 Hz reference to one CRO input and an audio generator to the other gives Lissajous figures; the ratio of the points where the figure touches the horizontal and vertical edges gives the unknown frequency. Passing the reference through RC or RL networks produces a phase shift that appears as an ellipse, and the phase angle follows from sin φ = y0/ymax. An audio sine-wave generator and a dual-trace 20 MHz CRO are required and not included. The unit is about 340 x 125 x 210 mm and weighs about 2 kg.
Key Specifications
| Parameter | Detail |
|---|---|
| Experiments | Use of an analog CRO; time period and amplitude; frequency and phase angle by Lissajous figures |
| Reference signal | 50 Hz, 3 V AC at 50 mA |
| Components | One inductor, one capacitor, resistance selector switch |
| Mains | 230 V ±10%, 50 Hz AC; ON/OFF switch, fuse and indicator lamp |
| Size and weight | 340 x 125 x 210 mm (W x H x D), about 2 kg |
| Also required (not included) | Audio sine-wave generator, dual-trace 20 MHz CRO |
Where This Is Used
Used in physics and electrical measurement labs. Related: Study of Phase measurement by super position with power supply and 1 multi range meter (C.R.) (Product ID: 12271) and Quadrature Oscillator with Power Supply (Product ID: 12302). Browse the full Electronics Engineering Lab Equipment range or related Physics Lab Equipment products.
Frequently Asked Questions
What is the known frequency?
50 Hz at 3 V AC.
How is phase angle found?
From the ellipse on the CRO screen, using sin φ = y0/ymax.
What else is needed?
An audio sine-wave generator and a dual-trace 20 MHz CRO.
Related Categories
Electronics Engineering Lab Equipment · Physics Lab Equipment · Electricity and Magnetism
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