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In the Forum: Analog Playback
In the Thread: The last phonocorrector: “End of Life" Phonostage
Post Subject: Big output capacitor question.Posted by AlexBerger on: 3/5/2021
Hi Guys,
The output impedance of ECC83 in cathode follower is around 625 Oms. But 1uF capacitor makes output impedance very big on low frequencies (around 8K Ohm at 20Hz). And in this schematics the global feedback doesn't work at low frequencies. So it looks reasonable to try to increase output capacitor value not to make lower cutoff frequency but decrees low frequencies output impedance. Have anybody tried using a big output capacitor instead of regular 1uF?If yes, does it make any difference?
Regards,Alex.Rerurn to Romy the Cat's Site