WIEN’S BRIDGE (FREQUENCY MEASUREMENT) | AC Bridge Apparatus for Accurate Frequency Determination

Description

The Wien’s Bridge (Frequency Measurement) Apparatus is a precision laboratory instrument designed to measure the frequency of an unknown AC signal using the Wien bridge principle. This experiment helps students understand frequency-dependent bridge balance conditions and the application of RC networks in AC bridge circuits.
Ideal for physics laboratories, electronics labs, engineering colleges, universities, and polytechnic institutes.
✅ Key Features
🔄 Wien Bridge Principle for Frequency Measurement
Measures unknown AC frequency using RC network balance
Demonstrates frequency-selective behavior of bridges
Verifies theoretical relationship between resistance, capacitance, and frequency
⚡ Built-In Signal Source Compatibility
Works with external audio frequency oscillator / function generator
Suitable for low-frequency AC signal measurements
Accurate balance detection using null method
📊 High Accuracy & Sensitivity
Precision resistors and capacitors for stable measurements
Sensitive detector (headphones / null detector / CRO compatible)
Ensures sharp and clear balance point detection
🧱 Educational Trainer Construction
Printed circuit diagram and formula on front panel
Clearly marked terminals, controls, and balance knobs
Robust enclosure suitable for repeated student handling
🔧 Easy Balance Adjustment
Variable resistors for fine balancing
Smooth control for quick frequency determination
Simple experimental procedure for students
🛡 Safety & Reliability
Low-voltage, student-safe operation
High-quality components ensure long-term accuracy
Minimal maintenance required
📘 Typical Applications
Measurement of unknown AC frequency
Study of RC bridge networks
Understanding frequency-selective circuits
Engineering physics and electronics practicals
Undergraduate and diploma laboratory experiments
💡 Why Choose This Apparatus?
Accurate and reliable frequency measurement
Clear demonstration of Wien bridge working principle
Essential experiment for AC bridges and network theory
Durable design ideal for academic laboratories