Description
The Photo Transistor Characteristics Apparatus is a precision educational instrument designed to study the voltage–current (V–I) characteristics of a phototransistor under dark and illuminated conditions. The apparatus demonstrates the amplified photo current response, highlighting the sensitivity advantages of phototransistors over photodiodes in optoelectronic applications.
Ideal for electronics laboratories, physics labs, engineering colleges, polytechnic institutes, and technical training centers.
✅ Key Features
🌟 Phototransistor Characteristics Study
Analysis of collector current variation with light intensity
Study of V–I characteristics under dark and illuminated conditions
Demonstrates current amplification due to transistor action
⚡ Built-In Regulated Power Supply
Smooth, continuously variable DC regulated power supply
Stable and noise-free voltage control
Ensures accurate and safe phototransistor operation
🔦 Integrated Variable Light Source
Controlled light source for uniform illumination
Adjustable intensity for sensitivity analysis
Enables quantitative comparison of photo response
📊 High-Sensitivity Measurement System
Precision voltmeter and micro-ammeter
Suitable for low-current and amplified photo current measurement
Easy plotting of characteristic curves
🧱 Educational Panel Design
Printed circuit layout on front panel
Clearly labeled terminals and controls
Compact and rugged enclosure for long-term laboratory use
🛡 Safety & Reliability
Low-voltage student-safe operation
Over-current and short-circuit protection
Durable components ensure consistent performance
📘 Typical Applications
Phototransistor V–I characteristic studies
Optoelectronics and sensor experiments
Light detection and intensity measurement
Electronics and physics laboratory training
Engineering and diploma practical courses
💡 Why Choose This Apparatus?
Clear demonstration of phototransistor working principle
High sensitivity due to current amplification
Accurate and repeatable experimental results
Essential tool for optoelectronics education
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