[Big Bad Bob]

On 01/18/16 10:52, so wittily quipped:
Hello!
Which tube is equivalent to 1/2 12BH7?

Thanks!


that's an interesting question. I looked at specs for 12BH7 and though
it looks a LOT like a 12AU7 or something similar, the max current and
voltage ratings are pretty high for it being a triode. It's suppposed
to be a deflection amplifier for a TV so apparently it's oriented
towards pulsed operation.

typically to get a nice sawtooth deflection wave, you'd discharge an
inductor by essentially pulsing it, then allow it to charge at a
somewhat constant current (so that voltage across it has a nice flat slope).

so a tube like that would be inclined to have a relatively constant
current with a widely varying plate voltage at some linear point.

normally the vertical output could be a relatively low power, whereas
the horizontal output needed more guts because it was also used for the
flyback high voltage anode on the TV tube.

not sure if the twin triodes are intended to be paralleled or not, but
they could be.


not sure what would be half of one of those. what are you planning on
using it for?

NOTE: 6AH4GT and 6S4 are listed in the GE tube book as a vertical
deflection amplifier triodes - maybe those?