In Reply to: RE: What tubes to use with this Interstage Transformers? posted by megasat16 on September 4, 2016 at 19:08:04:
If you look at a circuit from two different points you will get two different answers.
from the perspective of the source (ie 50r output of the signal generator) the 5K series resistor becomes part of the load.
from the perspective of the transformer primary, the 5K resistor becomes part of the source impedance.
when you want to analyze a source / load combo you need to take a single point in the circuit and then look at all of the paths to ground. In this case the only thing of interest is the primary of the transformer so looking backwards the source impedance driving it becomes the parallel combo of every path to ground. Take a signal generator with a 50 ohm output and parallel it with a 1 ohm resistor to ground and your source impedance is now just under an ohm.
dave
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Follow Ups
- RE: What tubes to use with this Interstage Transformers? - dave slagle 20:06:14 09/04/16 (17)
- RE: What tubes to use with this Interstage Transformers? - megasat16 21:15:04 09/04/16 (16)
- RE: What tubes to use with this Interstage Transformers? - dave slagle 08:18:53 09/05/16 (0)
- RE: What tubes to use with this Interstage Transformers? - Tre' 08:09:34 09/05/16 (14)
- RE: What tubes to use with this Interstage Transformers? - megasat16 12:27:44 09/05/16 (13)
- RE: What tubes to use with this Interstage Transformers? - Tre' 13:43:57 09/05/16 (12)
- RE: What tubes to use with this Interstage Transformers? - megasat16 17:08:51 09/05/16 (11)
- RE: What tubes to use with this Interstage Transformers? - Tre' 17:32:35 09/05/16 (10)
- RE: What tubes to use with this Interstage Transformers? - megasat16 18:03:13 09/05/16 (0)
- Screen shots - Tre' 17:57:11 09/05/16 (8)
- RE: Screen shots - megasat16 18:06:40 09/05/16 (7)
- RE: Screen shots - Tre' 18:10:01 09/05/16 (6)
- RE: Screen shots - megasat16 18:20:56 09/05/16 (5)
- RE: Screen shots - Tre' 18:49:25 09/05/16 (4)
- RE: Screen shots - megasat16 19:09:37 09/05/16 (2)
- RE: Screen shots - Tre' 19:32:25 09/05/16 (1)
- RE: Screen shots - megasat16 21:14:09 09/05/16 (0)
- RE: Screen shots - megasat16 18:56:14 09/05/16 (0)