Quick Answer: PN Junction Diode Characteristics is an apparatus for plotting the forward and reverse V-I curves of silicon and germanium diodes. It has a regulated DC supply with 0-3V and 0-30V ranges and separate forward and reverse bias circuits.
Last updated: October 2026
Key Features
Separate circuits for forward and reverse bias
Regulated DC supply, 0-3V and 0-30V ranges
Voltmeter and ammeter on board
Ammeter switches between mA (forward) and µA (reverse)
Uses discrete diodes
ABS/metal enclosure
Technical Specifications
Specification
Value
Circuits
Independent forward and reverse bias
Power supply
Regulated DC, 0-3V and 0-30V
Meters
Voltmeter and ammeter (2 meters)
Current ranges
mA (forward), µA (reverse)
Dimensions
250mm x 330mm x 100mm
About This Product
In forward bias students raise the voltage in small steps to find the cut-in (knee) voltage, then switch to reverse bias to see the very small leakage current. Comparing silicon and germanium diodes shows how the junction material changes the curve. The PN Junction Diode Characteristics can be supplied on export terms to Liberia, Barbados, Colombia, Bahrain, Slovenia and Jordan.
Frequently Asked Questions
Why does the ammeter have both mA and µA ranges?
Forward current is read in mA, while the much smaller reverse leakage current is read in µA.
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