Quick Answer: The SCR Characteristics Apparatus is a laboratory trainer for plotting the V-I characteristics of a silicon controlled rectifier. It has a variable regulated 0–30V DC anode supply and meters for anode voltage, anode current and gate current.
Last updated: October 2026
Key Features
Variable regulated DC anode supply, 0–30V
Separate variable regulated gate supply
Anode voltage read over 0–30V DC, anode current over 0–50mA DC and gate current over 0–250µA DC
4mm shrouded, colour-coded sockets
Bakelite panel with silk-screened circuit schematic
Technical Specifications
Specification
Value
Anode supply
Variable DC regulated, 0–30V DC
Anode voltage meter
0–30V DC
Anode current meter
0–50mA DC
Gate current meter
0–250µA DC
Sockets
4mm shrouded, colour-coded
Panel
Bakelite with silk-screened circuit schematic
Dimensions
310mm x 200mm (nominal)
About This Product
Students raise the gate current to trigger the SCR, then record anode voltage and current to draw its V-I curve. The same set-up is used to find the triggering level, latching current and holding current of the device.
Frequently Asked Questions
What can students measure with the SCR Characteristics Apparatus?
The V-I curve of the SCR, its triggering level, latching current and holding current, using the anode and gate supplies and the panel meters.
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