Old: A Direct-Coupled Input-Capacitorless Active Mic Preamp

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mediatechnology
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Re: A Direct-Coupled Input-Capacitorless Active Mic Preamp

Post by mediatechnology » Wed Aug 28, 2013 7:59 am

A quick update to this project...

I've now paired a THAT5173 gain controller to the 1570's flying rails. The 5173's 3V3 supply also flies and is derived from the flying positive rail.

With the 5173 the gain range is 0 dB to +60 or 10 dB to +70.

The 5173's SPI lines are opto-isolated from the grounded (not flying) USB-based gain controller CPU using Avago demo boards. http://www.avagotech.com/docs/AV02-3160EN

There's nothing very hard about doing this....
https://ka-electronics.com

Plandemic Series: "Pland3mic - Indoctornation" https://proaudiodesignforum.com/content ... nation.mp4
Plandemic Series: "Plandemic - Doctors In Black" https://proaudiodesignforum.com/content/Plandemic.mp4

CDC: "For 6% of the deaths, COVID-19 was the only cause mentioned. For deaths with conditions or causes in addition to COVID-19, on average, there were 2.6 additional conditions or causes per death." https://www.cdc.gov/nchs/nvss/vsrr/covi ... /index.htm

emrr
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Re: A Direct-Coupled Input-Capacitorless Active Mic Preamp

Post by emrr » Sun Sep 01, 2013 12:37 pm

nice addition.
Best,

Doug Williams
Electromagnetic Radiation Recorders

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mediatechnology
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Re: A Direct-Coupled Input-Capacitorless Active Mic Preamp

Post by mediatechnology » Fri Sep 20, 2013 3:43 pm

This thread is now locked.

Please visit the 2013 update to this project here
:

viewtopic.php?f=6&t=598
https://ka-electronics.com

Plandemic Series: "Pland3mic - Indoctornation" https://proaudiodesignforum.com/content ... nation.mp4
Plandemic Series: "Plandemic - Doctors In Black" https://proaudiodesignforum.com/content/Plandemic.mp4

CDC: "For 6% of the deaths, COVID-19 was the only cause mentioned. For deaths with conditions or causes in addition to COVID-19, on average, there were 2.6 additional conditions or causes per death." https://www.cdc.gov/nchs/nvss/vsrr/covi ... /index.htm

Locked