High‐vacuum electron tube with thermionic cathode for demonstrating the thermoelectric effect (Edison effect)
Use the tube to investigate the relationship between measured emission current and the voltage applied to the cathode
Also investigate the characteristics of diodes via the process of rectification
The diode is used to show the basic thermionic effects in vacuum tubes, including:Current flow between an incandescent filament and a cold electrode (the Edison effect)
Characteristic anode current/ anode voltage curves for different filament temperatures
Application of a diode as a rectifier
The diode consists of a basic glass spherical body with a cylindrical neck, containing a tungsten filament with 4mm connection sockets in the plastic cap on the neck and a circular anode plate connected to a 4mm plug connection on the sphere
Operating instructions supplied
Technical Specifications:Maximum filament voltage: =7.5 V AC/DC
Maximum anode voltage: 500 V
Anode current: 2.5mA at 300VRequires the following products to operate:B8A49463 ‐ Universal Stand
HT Power Supply ‐ to power the anode (*coming soon*)
B8G85458 ‐ Bench Power Supply ‐ to power the filament
