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This is a list of vacuum tubes or thermionic valves, and low-pressure gas-filled tubes, or discharge tubes. Before the advent of semiconductor devices, thousands of tube types were used in consumer electronics.
Inseparable assemblies—i.e., "items which are ordinarily replaced as a single item of supply" [2] —are typically treated as components in this referencing scheme. Examples: 1A12A2R3 - Unit 1, Assembly 12, Sub-assembly 2, Resistor 3; 1A12A2U3 - Unit 1, Assembly 12, Sub-assembly 2, Inseparable Assembly 3
One tube, the 7868, is used in some Hi-Fi systems made today. This tube is a Novar tube. It has the same physical dimensions as the compactron, but a 9 pin base. The exhaust tip is on the top or bottom of the tube, depending on the manufacturer's preference. It is currently in production by Electro-Harmonix.(The new power amp, Linear Tube Audio ...
This is a list of European Mullard–Philips vacuum tubes and their American equivalents. Most post-war European thermionic valve (vacuum tube) manufacturers have used the Mullard–Philips tube designation naming scheme.
The term All American Five (abbreviated AA5) is a colloquial name for mass-produced, superheterodyne radio receivers that used five vacuum tubes in their design. These radio sets were designed to receive amplitude modulation (AM) broadcasts in the medium wave band, and were manufactured in the United States from the mid-1930s until the early 1960s.
The exception is the Mod 9 sets, which only have two tubes and are fixed in position. [3] The Mark 32 can fire 12.75-inch (324 mm) torpedoes of the Mark 44 , Mark 46 , Mark 50 (from the Mod 17 tubes onwards), [ 3 ] [ 4 ] and Mark 54 [ citation needed ] designs, and can be modified to use other torpedoes (such as the MU90 Impact aboard Royal ...
Torpedo tubes of the French SNLE Redoutable: French submarines use pistons to push the torpedo outside the tube, instead of blowing it out with compressed air. There are two main types of torpedo tube: underwater tubes fitted to submarines and some surface ships, and deck-mounted units (also referred to as torpedo launchers ) installed aboard ...
This tube is essentially two 6C4/EC90s in the same envelope. However, this latter type is officially described in manufacturer's data as "a special quality R.F. power amplifier or oscillator for frequencies up to 150 MHz". [2] The 12AU7, on the other hand, is described as an "A.F. double triode". [3]