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In Reply to: RE: What tubes to use with this Interstage Transformers? posted by cpotl on September 08, 2016 at 15:01:00
Chris,
You are contradicting some partial truth with some false information. The 5K impedance of FG has some (even if limited) capability to supply the voltage without sagging when a load with 5K or more load is connected (regardless of it's resistive or reactive).
The 5K series resistor external to the FG has 0 capability of supplying any load current to the 5K LOAD unless the 50ohm FG supply some current to it first. So, based on the impedance of the load, it is just dropping voltage (stealing from the source) rather than working in union with the Source.
Very different, yeah?
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.Thou shall not stand where I type for I carry a bottle of Certified Audiophile Air and a Pure Silver Whip.
Follow Ups:
I think it wiuld be helppful if you were to give *your* definition of what a signal generator with 5K output impedance means. I mean, be quantitative and say exactly what measurement would you perform that would produce 5K as the answer?I believe I have given a conventional definition of output impedance, namely it equals the resistance of the load you have to drive in order to cause the no-load ourput voltage to drop by 50%
So what is your quantitative measurement that would allow you to determine the output impedance?
Chris
Edits: 09/08/16
It is a voltage source with an active components as the current / voltage provider (namely tubes or transistors with some passive devices such as resistors and Xc and Xl in a closed loop circuit).
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.Thou shall not stand where I type for I carry a bottle of Certified Audiophile Air and a Pure Silver Whip.
No, I'm not asking about a narrative discussion about what is "inside the box." I'm asking what measurement you would perform, entirely "outside the signal generator box," to determine the quantitative answer for what its output impedance is.
For example, what external measurement would you make in order to derermine whether the output impedance of 5K claimed by the maker was an accurate claim or not? I.e. How exactly are you defining output impedance? How would you measure it?
Until you give your operational and quantitative definition of output impedance, it is not really possible to have a sensible discussion.
Chris
Chris,I don't need this discussion. You can read to the beginning of this thread if you want to know why. I am not the guy started it.
I think you'll also find the answers to your questions at the beginning of this thread.
Thanks,
James
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.Thou shall not stand where I type for I carry a bottle of Certified Audiophile Air and a Pure Silver Whip.
Edits: 09/08/16
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