Wien bridge audio oscillator with power supply Manufacturer,Supplier and Exporter in India
Product Code : SCL-EELE-12135
Indian Lab Suppliers supplies the Wien bridge audio oscillator with power supply (Product ID: 12135) as part of its electronics engineering lab equipment range. It is a training board for building and studying a transistor Wien bridge audio oscillator.
Quick Answer
Two PNP transistors, a variable gang condenser and a potentiometer are mounted on the board with an IC-regulated −9 V DC, 50 mA supply. Students obtain oscillations at different frequencies by changing R and C, and plot the frequency response of the Wien network. The network has zero phase shift at f = 1/(2πRC), where it passes one third of the signal, so the amplifier needs a gain of at least 3 to sustain oscillation.
Key Specifications
| Parameter | Detail |
|---|---|
| Circuit | Wien bridge audio oscillator, two PNP transistors |
| Tuning | Variable gang condenser and potentiometer |
| Built-in supply | −9 V DC, 50 mA, IC regulated |
| Mains input | 230 V ±10%, 50 Hz AC, with mains switch, fuse and pilot lamp |
| Experiments | Oscillation at different R-C values; frequency response of the network |
| Connections | 4 mm terminals; stackable spring-loaded patch cords, 0.5 m |
| Weight | 3 kg (approx.) |
| Dimensions | W 340 x H 110 x D 210 mm |
| Also required | AC millivoltmeter, AF generator, 20 MHz CRO |
Where This Is Used
Studied together with the Phase Shift Audio Oscillator with power supply (Product ID: 12136) as the two main R-C audio oscillators in analog electronics courses. The unit runs on 230 V mains; switch off before rewiring. Related items: Wien Bridge Oscillator (Op Amp version) with Power Supply (Product ID: 12301) and Wien Bridge Oscillator Using JFET (Product ID: 12325). Browse the full Electronics Engineering Lab Equipment range or related Electronics Lab Equipment products.
Frequently Asked Questions
How is the frequency changed?
By varying R and C, using the gang condenser and potentiometer.
Why is an oscilloscope needed?
To view the output waveform and measure its frequency.
What gain does the amplifier need?
At least 3, to make up for the one-third transmission of the Wien network.
Related Categories
Electronics Engineering Lab Equipment · Electronics Lab Equipment · Electricity and Magnetism
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