Energy Band Gap Apparatus
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Product Code : SCL-EI-12131
Quick Answer: The Energy Band Gap Apparatus finds the forbidden energy gap of a semiconductor PN junction from its reverse saturation current at different temperatures. It combines a 0–20 V DC variable supply, a temperature-controlled oven, a mercury thermometer and panel meters in one ABS cabinet.
Last updated: October 2026
Key Features
- Variable regulated DC supply, 0–20 V
- Temperature-controlled electric oven for heating the junction
- Front-panel mercury thermometer
- Voltmeter with 20 V DC full scale and a current meter
- Bakelite panel with printed circuit diagram; colour-coded 4 mm shrouded sockets
- ABS cabinet, 310 mm x 200 mm
Technical Specifications
| Specification | Value |
|---|---|
| DC supply | Regulated, variable 0–20 V |
| Heating | Temperature-controlled electric oven |
| Thermometer | Mercury, front-panel mounted |
| Voltmeter | 20 V DC full scale |
| Panel | Bakelite with printed circuit schematic |
| Cabinet | ABS, 310 mm x 200 mm |
About This Product
As a PN junction is heated, its reverse saturation current rises in a way that depends on the band gap. Students record the current at a series of temperatures, plot the logarithm of current against reciprocal temperature and work out the band gap from the slope, a standard college physics practical on semiconductors. Schools, colleges and institutes in Maldives, United States, Vietnam, Saint Lucia, Georgia and Tunisia can order the Energy Band Gap Apparatus from Educational Instrument.
Frequently Asked Questions
How is the junction heated in the Energy Band Gap Apparatus?
A temperature-controlled electric oven heats the junction, and a front-panel mercury thermometer shows the temperature.
Related: Electronic Instruments, PN Junction Diode Apparatus, LED Characteristics Apparatus and Transistor Characteristics Apparatus.
For a quotation on the Energy Band Gap Apparatus, contact Educational Instrument.
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