FET Characteristics Apparatus
Product Code : SCL-PLE-11841
Quick Answer: The FET Characteristics Apparatus is a panel for plotting the drain and transfer characteristics of an N-channel JFET, with a 0–5 V negative gate supply, a 0–15 V drain supply and meters for gate voltage, drain voltage and drain current up to 20 mA.
Last updated: 18 October 2026
Key Features
- Built around an N-channel junction field effect transistor.
- Two independent DC sources: VGS of 0–5 V (negative) and VDS of 0–15 V (positive).
- Gate voltmeter, drain voltmeter and drain ammeter on the panel.
- Drain current measured over 0–20 mA.
- Multi-turn potentiometers give fine control near pinch-off.
Technical Specifications
| Specification | Value |
|---|---|
| Device | N-channel JFET |
| Gate supply (VGS) | 0–5 V DC, negative |
| Drain supply (VDS) | 0–15 V DC, positive |
| Ammeter range | 0–20 mA (drain current) |
| Voltmeter ranges | 0–5 V (gate-source), 0–15 V (drain-source) |
| Controls | Multi-turn potentiometers |
| Connections | Schematic overlay with 4 mm safety-shrouded sockets |
How It Is Used
With the gate-source voltage held at a fixed value, the drain-source voltage is raised and drain current noted, giving the drain characteristics and showing the pinch-off region. Holding VDS constant while making the gate more negative gives the transfer characteristic, which shows that the FET is controlled by voltage rather than by a base current as in a BJT.
Frequently Asked Questions
What device is studied with the FET Characteristics Apparatus?
An N-channel junction field effect transistor (JFET), whose drain current is set by the gate-source voltage.
What ranges do the supplies on the FET Characteristics Apparatus cover?
The gate supply gives 0–5 V negative and the drain supply 0–15 V positive, with drain current read up to 20 mA.
Related Physics Lab Equipment
See the full physics lab equipment range, or these related semiconductor characteristics apparatus:
- Transistor Characteristics Apparatus
- UJT Characteristics Apparatus
- SCR Characteristics Apparatus
- Digital Transistor Characteristics Apparatus
- Zener Diode Apparatus (Socket Type)
For a quotation on the FET Characteristics Apparatus, contact JLab India on +91-8569909696.
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