KT88 is a beam output pentode with an octal base and power of 42W. Very powerful, with strong bass and very bright highs. It can also be used in 6550 amplifiers.
The device has an anode dissipation of 35W and is primarily designed for the output stage of an a.f. amplifer for which two valves will provide up to 100W output. Under intermittent conditions, an output 150W is obtainable in Class B. It is also suitable for use as a series valve in stabilised power supply.
The function of this semiconductor is Triode Vacuum Tube.
Manufacturers : SYLVANIA
The 6DJ8 was designed for use as a low-noise amplifier in VHF and UHF TV tuners, an improved successor to the usual 6BK7, but due to its high gain it was used in much high-end test equipment. Most high-quality oscilloscopes from the 1950s to the 1960s have many 6DJ8 tubes.