WEIN’S BRIDGE (CAPACITANCE MEASUREMENT) | Precision AC Bridge Apparatus for Measuring Capacitance & Frequency

Description

The Wein’s Bridge Apparatus is a high-accuracy laboratory instrument designed for the measurement of unknown capacitance and for studying frequency determination using an AC bridge network. Based on the classical Wien bridge principle, this apparatus is widely used in electrical and electronics laboratories to demonstrate AC bridge balancing conditions and reactive component analysis.
Ideal for physics labs, electrical & electronics engineering colleges, polytechnic institutes, and technical training laboratories.
✅ Key Features
⚡ Accurate Capacitance Measurement
Measurement of unknown capacitance using Wien bridge method
High accuracy for medium-range capacitance values
Clear verification of bridge balance conditions
🎚 Standard Resistor & Capacitor Network
Precision standard resistors and capacitors mounted on panel
Smooth variation using calibrated potentiometers or resistance boxes
Enables easy and stable balancing of the bridge
🔊 AC Signal Source Compatibility
Operates with standard audio frequency oscillator
Suitable for a wide range of frequencies
Allows study of frequency response along with capacitance measurement
📊 Sensitive Null Detection
Uses headphones / vibration galvanometer / detector (model dependent)
Sharp null point ensures precise measurement
Enhances experimental accuracy and repeatability
🧱 Educational Trainer Design
Circuit diagram printed clearly on front panel
Well-labeled terminals, knobs, and controls
Rugged, compact enclosure suitable for student use
🛡 Safety & Reliability
Low-voltage AC operation
Shock-safe design
High-quality components for long service life
📘 Typical Applications
Measurement of unknown capacitance
Study of AC bridge principles
Frequency determination using Wien bridge
Electrical measurements practicals
Physics and electronics engineering laboratory experiments
💡 Why Choose This Apparatus?
Accurate and stable capacitance measurement
Simple bridge balancing suitable for students
Essential experiment for AC bridge theory
Durable and reliable for academic laboratories