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In the Forum: Analog Playback
In the Thread: The last phonocorrector: “End of Life" Phonostage
Post Subject: The End of Life Phonostage’s power supplyPosted by Romy the Cat on: 11/25/2007
Yesterday my machinist informed me that the End of Life Phonostage’s chassis will be reedy next week. So, I desisted update the power supplies of the thing replacing the FRED diodes with those no reverse/forward recovery Silicon Carbide Schottky diodes. It was kind of fun as I was not in that power supply for 7 years and it had spider net all over it and a few dinosaurs’ eggs…
There is nothing really special in that PS. Each channel has own separated transformers, separated rectivication and separated filters for plates and filaments. The filaments have input choke filters. The plates have practically default 843P PS circuit, with voltage bubblier) – in my past I was not able to get better sound for this phonocorrector from better and more sophisticated power supplies. So, I put the 600V Schottky in and closed it up. Well, considering the name and objective of this phonostage it should be the last time I ever opened this supply…
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