Measurement of unknown capacitance by Schering Bridge Manufacturer,Supplier and Exporter in India
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Product Code : SCL-EELE-12327
Indian Lab Suppliers supplies the Measurement of unknown capacitance by Schering Bridge (Product ID: 12327) as part of its electronics engineering lab equipment range. It is a self-contained board for measuring an unknown capacitance with a Schering bridge.
Quick Answer
The board carries a Schering bridge with marked arm values, a 1 kHz sine-wave oscillator (0-15 Vpp) as the bridge source and an audio amplifier with speaker as the null detector, so balance is found when the tone falls to a minimum. Three unknown capacitors are chosen with a band switch, one of six resistance values is chosen with a second band switch, and a potentiometer trims the bridge to balance. A ±12 V DC, 100 mA IC-regulated supply is built in and the unit runs from 230 V ±10%, 50 Hz mains.
Key Specifications
| Parameter | Detail |
|---|---|
| Bridge | Schering bridge circuit with arm values marked |
| Source | 1 kHz sine-wave oscillator, 0-15 Vpp |
| Null detector | Audio amplifier with speaker |
| Unknowns | Three capacitors, selected by band switch |
| Resistance selection | Band switch, six values |
| Internal supply | ±12 V DC at 100 mA, IC regulated |
| Mains | 230 V ±10%, 50 Hz AC, with ON/OFF switch, fuse and indicator lamp |
| Patch cords | 4 mm stackable spring-loaded plugs, 0.5 m |
Where This Is Used
Used in electrical measurements practicals alongside the Measurement of Inductance by Hay's Bridge (Product ID: 12326) and the Measurement of Capacitance by Wien Bridge with power supply and oscillator (Product ID: 12244). Connect the unit to an earthed mains socket and switch off before rewiring. Browse the full Electronics Engineering Lab Equipment range or related Electronics Lab Equipment products.
Frequently Asked Questions
How is bridge balance detected?
By ear, through the built-in audio amplifier and speaker used as a null detector.
What frequency drives the bridge?
A built-in 1 kHz sine-wave oscillator with 0-15 Vpp output.
How many unknown capacitors are fitted?
Three, selected with a band switch.
Related Categories
Electronics Engineering Lab Equipment · Electronics Lab Equipment · Electricity and Magnetism
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