[Milsurplus] rotary inverter

[WA5CAB at cs.com]

Never smelled anything like that from them, but D-401 is the TCS transmitter 
dynamotor.  A number of people on this list have the NT-21881 Dynamotor-Power 
Unit (base plus D-401 plus D-402).  

In a message dated 2/2/2005 9:15:29 PM Central Standard Time, 
recycler at swbell.net writes: 
> I've had an unusual experience with dynamotors, they were new 
> D-401? dynamotors, 12VDC in / 400-450 out at 180mA. I got them 
> from Fair radio, still sealed in the cartons.
> 
> I built a car stereo power amp 
> (http://www.montagar.com/~patj/tubeart.htm) and discovered that 
> when I used the amp, the dynamotors emitted a sort of nasty 
> smell. It was not overheating, nor ozone, but an odd 
> chemical-like small, which was kind of nauseating after a while. 
> I thought it was unhealthy. In the summer with the windows up and 
> A/C on, it got prety bad. The amp was mounted behind the driver 
> seat in a van.  I had serviced the bearings before use, etc.. so 
> I have no idea what. I have never smelled this on an old used 
> dynamotor. Could it have been the brushes wearing in and I was 
> inhaling the smell of that? Real wierd.
> 
> Anyone have a similar experience or know what kind of odor that 
> is/was?
> 

Robert Downs - Houston
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