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-   -   Krell KAV 300CD Transformer Outputs (https://www.diyaudio.com/forums/power-supplies/270970-krell-kav-300cd-transformer-outputs.html)

quad121 6th March 2015 03:49 PM

Krell KAV 300CD Transformer Outputs
 
Can anyone who has a Krell KAV 300CD please measure the secondary outputs of the transformer.
I would be much appreciated
Thank you Paul

Mastersolder 29th March 2020 07:41 PM

Hello Paul

I have the same problem with my Krell 300CD now.
Can you tell me the secondary AC Voltages of the transformer?

Especially these for the +/- 18 Volt rails of the output stage PSU will be helpfull as a reference.

Best regards
Marcel

PRR 30th March 2020 03:44 AM

1 Attachment(s)
> secondary AC Voltages of the transformer? Especially these for the +/- 18 Volt

Analysis is trivial. Using a blunt stick, each junction needs nearly 1 Volt to stay alive. Counting up from 18V out, we need more than 22V in. OTOH over 50V in is pointless and will will blow-up some caps. Very likely the happy DC is somewhere in the middle. My sliderule says 23.xxx? VAC.

Mastersolder 30th March 2020 07:02 AM

Hi RRR

This sounds very reasonable and competently.
Thank you for the fast reply!

Regards
Marcel


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