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Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

relay volume control
relay volume control
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Old 23rd October 2020, 10:29 AM   #1
arivel is offline arivel  Italy
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Join Date: May 2014
Default relay volume control

Hello everybody .
can you tell me where to find information on the volume control configuration made in relay similar to R2R configuration?
I also need a schematic to understand how it works.
bye thank you
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Old 23rd October 2020, 10:54 AM   #2
Tfive is offline Tfive  Germany
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Location: Straubing
You can have a look here: schematic.pdf * master * Jurgen Herrmann / VolCtrlDR * GitLab


The project is basically A BPPBP (preamp by Bruno Putzeys) with relay volume control (0 to -63dB).


The whole repository including Kicad files is here: Projects * Jurgen Herrmann / VolCtrlDR * GitLab
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Old 25th October 2020, 06:20 PM   #3
simonra is offline simonra  United Kingdom
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Location: Bournemouth UK
This is a log attenuator calculator, the links at the end will take you to schematics etc.
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