PN Junction Diode Apparatus
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Product Code : SCL-EI-12135
Quick Answer: The PN Junction Diode Apparatus is a dual-meter module for plotting the forward and reverse I-V characteristics of silicon and germanium diodes. It has a 0–3V low-range supply and a 0–30V high-range supply, both variable and regulated.
Last updated: October 2026
Key Features
- Built-in silicon (Si) and germanium (Ge) diodes
- Two variable regulated DC supplies: 0–3V / 10mA and 0–30V / 100µA
- Dual-range voltmeter (3V / 30V DC) and dual-range ammeter (10mA / 100µA DC)
- 4mm shrouded, colour-coded sockets
- Bakelite panel with printed circuit schematic
Technical Specifications
| Specification | Value |
|---|---|
| Low-range supply | Variable DC regulated, 0–3V / 10mA |
| High-range supply | Variable DC regulated, 0–30V / 100µA |
| Voltmeter | Dual range, 3V / 30V DC |
| Ammeter | Dual range, 10mA / 100µA DC |
| Diodes | Silicon (Si) and germanium (Ge), built in |
| Sockets | 4mm shrouded, colour-coded |
| Panel | Bakelite with printed circuit schematic |
About This Product
The low-voltage, milliamp range suits forward bias readings, while the higher-voltage, microamp range suits the small currents seen in reverse bias. Plotting both diodes on the same panel lets students compare how silicon and germanium junctions behave. Laboratories and colleges in Senegal, Argentina, Zambia, Chad, Malaysia and Libya can buy the PN Junction Diode Apparatus through an export order.
Frequently Asked Questions
Which diodes are fitted to the PN Junction Diode Apparatus?
Silicon (Si) and germanium (Ge) diodes are built into the panel, so both can be tested in forward and reverse bias.
Related: Electronic Instruments, PN Junction Diode Characteristics Apparatus, Digital PN Junction Diode Apparatus and Zener Diode Apparatus (Socket Type).
For a quotation on the PN Junction Diode Apparatus, contact Educational Instrument.
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