I've always thought that 3C24's were cool looking light bulbs....
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~Tom
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~Tom
Hello Tyne,
The 812A has a Thoriated-tungsten-filament and illuminates very brightly but is seldom used in audio work. I have a pair that some day I will play with. These direct heated power triodes were most commonly used in early modulators, AF pwr amps and transmitting RF application back in the 1940's. Mickeystan
The 812A has a Thoriated-tungsten-filament and illuminates very brightly but is seldom used in audio work. I have a pair that some day I will play with. These direct heated power triodes were most commonly used in early modulators, AF pwr amps and transmitting RF application back in the 1940's. Mickeystan
The 812A has a Thoriated-tungsten-filament and illuminates very brightly but is seldom used in audio work.
Most thoriated tungsten filaments are rather bright. The 211 and the 845 light up rather well.
845 - looks like a light house......10V @ 3A is 30 Watts of glow.
Actually its 10 volts at 3.25 amps. There is two of them running here. That and the computer monitor are the only lights in the room.
GM-70. 20V@3A = 60W, almost like light bulb...
The 833A has a 10 volt 10 amp filament for 100 watts, but it also makes a good room heater.
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