Description
The WORK FUNCTION OF DIODE (RICHARDSON LAW) apparatus is a high-accuracy laboratory setup designed to experimentally determine the work function of a thermionic diode using Richardson’s law of thermionic emission. This experiment provides a clear understanding of electron emission from heated cathodes and validates the temperature dependence of emission current.
An essential experiment for modern physics and electronics laboratories in engineering colleges, universities, and academic institutions.
✅ Key Features
🔬 Thermionic Emission Demonstration
Enables determination of work function of a diode
Verifies Richardson–Dushman equation
Demonstrates temperature dependence of emission current
💡 High-Quality Vacuum Diode
Specially selected diode for stable thermionic emission
Long life and consistent characteristics
Ensures repeatable experimental results
🎛 Precision Regulated Power Supplies
Independent heater and anode voltage controls
Smooth variation for accurate current measurements
Built-in meters for voltage and emission current monitoring
📊 Accurate Measurement & Graphical Analysis
Enables plotting of ln(I/T²) vs 1/T graph
Clear determination of work function from slope
Ideal for laboratory record and evaluation purposes
🧱 Rugged & Student-Friendly Construction
Panel-mounted setup with clearly labeled controls
Durable cabinet for repeated academic use
Designed for ease of operation and safety
🛡 Safe & Reliable Operation
Low-voltage, student-safe design
Proper insulation and grounding
Over-current and thermal protection
📊 Typical Applications
Determination of work function of metals
Verification of Richardson law
Study of thermionic emission
Modern physics practical experiments
Electronics & engineering physics labs
Semiconductor and vacuum tube studies
💡 Why Choose This Model?
Accurate determination of diode work function
Clear verification of Richardson’s law
Easy-to-operate design for students
Durable construction for long-term lab use
Essential apparatus for modern physics education
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