I presume you mean carbon composition rod. Pure carbon would give too few ohms to have much use in a valve radio.
Some Rs used metal caps instead of wires, and were mounted in a clip-in holder. I guess they needed to be replaced sometimes as different valves sometimes needed different grid leak values.
as long as it's well under. Rated life for power Rs operated at specced power can be terrible.
NT
May seem counter-intuitive, but hydrogen is not actually the smallest atom. Heliums come singly alright, which is one of the reasons, along with small size, they're used for this kind of leak testing.
Good point; also, the H2 molecule has two 1S-like electrons, which is very similar to a Helium atom, and just about as slippery. H2 atoms are lighter than He, on average.
Good point; also, the H2 molecule has two 1S-like electrons, which is very similar to a Helium atom, and just about as slippery. H2 molecules are lighter than He atoms, on average.
Thanks, I did mean composite.
Ads in the early radio magazines are handy for that sort of data. And yes, you did keep a drawer of grid resistors handy if you wanted best performance out of your rig.
Power derated curve curves can be surprising for almost any component.
Heck Molex pin connectors are rated at 25 insertions if I recall correctly, and they are heavily used in arcade games...
Spec sheets do need to be read after all.
John :-#)#
Hydrogen is also explosive or will burn. That is another reason not to just spray it out for leak detection.
I think that hydrogen may be the smallest atom, but they often join in pairs to make up a larger molicule. Some other atoms that are normally gas do the same thing.
Oh boy. Where do I start?
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