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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: What happened to all the parts?? posted by vinnie2 on January 27, 2016 at 14:13:41:
Caucasian Blackplate stated that Mouser has everything but the non-inductive spec. You want a non-inductive resistor when the signal is present so that you don't bleed off vey high frequencies. Most of the time, however, the concern is bleeding Mega or Giga Hz signal.
For a cathode resistor you are following the advice that "someone said that inductive resistors are bad so obviously they are bad everywhere". An un-bypassed cathode resistor creates feedback. Therefore if the resistor was inductive and affected the audio frequency band the frequency of this feedback would not be flat and you would hear high frequency roll-off. The fly in that ointment is that a bypass cap eliminates the feedback so there is no effect, even in the Mhz where it will show up. If you are running an in-bypassed resistor on your output, well, lets just say the inductance is the least of your problems.
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Follow Ups
- Do you know why you want a non-inductive resistor for a cathode resistor? - Chip647 05:08:54 01/28/16 (3)
- RE: Do you know why you want a non-inductive resistor for a cathode resistor? - vinnie2 08:20:26 01/28/16 (2)
- You do realize that we are trying to help you. (nt) - Chip647 04:25:28 01/29/16 (1)
- RE: You do realize that we are trying to help you. (nt) - vinnie2 08:51:48 01/29/16 (0)
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