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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: any one here using kiwame resistors on grids stopper ? posted by lovetube on May 11, 2016 at 09:07:04:
Noise only occurs where there is current. There is virtually no current driving a grid.
One of the problems using a spiral-wound component in this application is the difficulty in testing for spurious responses (oscillations). Such responses may occur only when signal is present, and may appear only for brief intervals as the signal crosses the zero point, or on positive or negative peaks. The only definitive tool for this is a spectrum analyzer with a bandwidth of several hundred MHz. Lacking this instrument, the only resistor safe for a DIYer to use in either the grid or anode is carbon comp. Failing to hear anything amiss after installing something else is no guarantee that the amplifier isn't oscillating.
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- Noise & Parasitics - Triode_Kingdom 13:24:40 05/11/16 (0)
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