The Brush Development Co. BL-905. What is it?
Posted 9th January 2012 at 11:41 AM by tonekwest
I have what looks to be an amplifier of some sort and was wondering if any of the forum members may be familiar with what I actually have. So far, my search results have come up with nothing.
It is from the Brush Development Company. Type BL-905. Will try to post list of tubes in the unit tonight.
It is from the Brush Development Company. Type BL-905. Will try to post list of tubes in the unit tonight.
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Comments
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Here is a link to more pics of the amp.
Brush Development Co pictures by tonekwest - PhotobucketPosted 9th January 2012 at 11:55 AM by tonekwest -
It's probably a direct-coupled oscillograph amplifier. It's a voltmeter and the output would move the pen of a plotter. Probably late 40's.
Link to IEEE article, subscription required.Posted 13th January 2012 at 06:31 AM by rjm
Updated 13th January 2012 at 06:36 AM by rjm