Wien Bridge Oscillator (Op Amp version) with Power Supply Manufacturer,Supplier and Exporter in India
Product Code : SCL-EELE-12301
Indian Lab Suppliers supplies the Wien Bridge Oscillator (Op Amp version) with Power Supply (Product ID: 12301) as part of its electronics engineering lab equipment range. It is an op-amp Wien bridge oscillator for studying the feedback needed to sustain oscillation and how R and C set the frequency.
Quick Answer
The lead-lag RC network gives zero phase shift at f = 1/(2πRC), where it passes one third of the output back, so the amplifier needs a gain of 3; students adjust the negative-feedback potentiometer to find the resistor ratio that just sustains a clean sine wave. Two band switches select nine frequencies by changing R and C in the lead-lag network, and the frequencies are checked on a digital frequency counter and 20 MHz CRO (both extra). An internal ±15 V DC, 50 mA supply powers the op-amp.
Key Specifications
| Parameter | Detail |
|---|---|
| Experiments | Resistor ratio for correct negative feedback; frequency change with R and C of the lead-lag network |
| Active device | Op-amp IC |
| Frequency selection | Nine frequencies via two band switches |
| Feedback control | Potentiometer |
| Supply | ±15 V DC at 50 mA, IC regulated, internal |
| Mains | 230 V ±10%, 50 Hz AC; ON/OFF switch, fuse and indicator lamp |
| Also required (not included) | 20 MHz CRO, digital frequency counter |
Where This Is Used
Used in oscillator practicals in analog electronics. Related: Wien Bridge Oscillator Using JFET (Product ID: 12325) and Quadrature Oscillator with Power Supply (Product ID: 12302). Browse the full Electronics Engineering Lab Equipment range or related Electronics Lab Equipment products.
Frequently Asked Questions
What gain does the amplifier need?
About 3, to make up for the 1/3 attenuation of the lead-lag network.
How many frequencies can be selected?
Nine, using two band switches.
How is frequency measured?
With an external digital frequency counter or CRO.
Related Categories
Electronics Engineering Lab Equipment · Electronics Lab Equipment · Engineering Lab Equipment
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