Its a CCS biased shunt reg. There is a parallel voltage setting part also (he did not include). Combo AKA super reg as the Japanese pioneered the term.
Would you point me the full schematic ?
I am mastering in shunts (thanks to you).... but need some insight
Balanced has nothing to do with signal levels nor amounts of amplification.
Balanced has a proper name:
Balanced impedance connection.
It's the BALANCED IMPEDANCE that matters, not the voltages.
Further, there is no connection to the third conductor/screen in the balanced impedance cable.
Ignoring the third conductor/screen, we have only two signal lines.... Those two lines should carry a symmetrical image of the signal... what I am trying to say is that if you have different (not symmetrical) signals feeding these lines you will surely get a mess out.
Right
But imagine a difference in freq response between the two with corresponding phase shifts... hehe
Even this might bee too difficult to implement: Tube CAD Journal: Tube balanced phono stage, July 1999
NO !!!
balanced impedance connections DO NOT need voltage on both lines.
Both can be equal and opposite phase, or both can be different values and same phase, or one can be zero level and the other can be of either phase, or a multiplicity of other voltage combinations.
What matters is that the Source component sees EXACTLY the same impedance on both lines and the Receiver component sees EXACTLY the same impedance on both lines.
RCruz,
I will be trying a transformer based balanced input into SE FSP with single gain fet, which is then converted to balanced. I prefer balanced connections as they seem to offer so many advantages, both objectively and for me, subjectively. Be warned that transformers are like capacitors. I will be looking at the SACT, Jensen, and Silk audio input transformers.
I will be trying a transformer based balanced input into SE FSP with single gain fet, which is then converted to balanced. I prefer balanced connections as they seem to offer so many advantages, both objectively and for me, subjectively. Be warned that transformers are like capacitors. I will be looking at the SACT, Jensen, and Silk audio input transformers.
This is the major difficulty when establishing a balanced connection... I know that.
But on top of that if the two signals are not perfectly correlated we should have another big problem... that is what I am talking about.
I think this is one of the ideas behind cross coupled circuits like the Pass stuff. If you don't have something that is actively comparing/balancing the two sides, then perhaps it is best left alone. On the output of the RIAA, you could use another transformer or perhaps a discrete version of the opa1632
the signal levels are irrelevant as shown in the examples in post14014.
You could have 2V & 1V on the lines and the output would be a scaled version of the 1V difference.
or you could have 1V & 0V and the difference is 1V
or -0.5V and +0.5V and the difference is 1V
or -15V and -14V and the difference is 1V
The input levels don't matter.
Look up some articles on Balanced Impedance amplifiers.
And Differential amplifiers.
You could have 2V & 1V on the lines and the output would be a scaled version of the 1V difference.
or you could have 1V & 0V and the difference is 1V
or -0.5V and +0.5V and the difference is 1V
or -15V and -14V and the difference is 1V
The input levels don't matter.
Look up some articles on Balanced Impedance amplifiers.
And Differential amplifiers.
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