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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: Re: Origin of Hickok Roll Chart Data Remains a Mystery posted by Steve O on September 3, 2003 at 20:24:33:
You mentioned the Weston 981 which does not work like a Hickok. With the Weston (and the Heath TT1) plate current begins to flow as soon as the shorts switch is set to the test position. The Gm test button just applies the signal to the grid of the tube, it does not control the plate current. The line adjust on the Heath and the Weston is made WITH plate current flowing. This is also true with the Triplett 3444. In some ways I like the Hickok system better, as high voltage does not hit the tube until you depress a button. This is safer for the operator, and the tester. If you plug a shorted tube into a Weston/Triplett 3444/TT1A, you can toast something in the tester long before you press the Gm test button.I don't think Hickok, or the military had to tell people all the things they were NOT supposed to do in the manuals. That is asking way too much and would make manuals much longer.
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- Re: Origin of Hickok Roll Chart Data Remains a Mystery - Chris Haedt 04:27:50 09/04/03 (0)
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