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6N3C power tube.
A single-ended class 'A' guitar amplifier chassis, with additional GZ34 valve rectifier installed.
A single-ended class 'A' guitar amplifier chassis, with additional GZ34 valve rectifier installed.
1960's Fender Bandmaster Reverb tube guitar amplifier chassis.
1960's Fender Bandmaster Reverb tube guitar amplifier chassis.
McIntosh MC240 from 1961 with exposed vacuum tubes
McIntosh MC240 from 1961 with exposed vacuum tubes
Triode
Examples of low power triodes from 1918 (left) to miniature tubes of the 1960s (right)
Examples of low power triodes from 1918 (left) to miniature tubes of the 1960s (right)
ECC83, a dual triode used in 1960-era audio equipment
ECC83, a dual triode used in 1960-era audio equipment
3CX1500A7, a modern 1.5 kW power triode used in radio trans­mitters. The cylindrical structure is a heat sink atta­ched to the plate, through which ai
3CX1500A7, a modern 1.5 kW power triode used in radio trans­mitters. The cylindrical structure is a heat sink atta­ched to the plate, through which air is blown during operation.
De Forest Audion tube from 1908, the first triode. The flat plate is visible on the top, with the zigzag wire grid under it. The filament was original
De Forest Audion tube from 1908, the first triode. The flat plate is visible on the top, with the zigzag wire grid under it. The filament was originally present under the grid but was burnt out.