[GreenKeys] Inside a REC-30 rectifier

[epvgk at limpoc.com]

On Tue, Sep 11, 2018 at 05:13:37PM -0400, Paul Heller wrote:
> 
> 
> > On Sep 11, 2018, at 2:33 PM, epvgk at limpoc.com wrote:
> > 
> > Mine uses 323B tubes, and came with the model 19, so I assume it was intended for that. 
> > It produces enough current to run at least one 60mA loop as well as the model 19's keyboard
> > punch, which needs a lot more current. The thyratrons light up really bright when it's
> > punching tape. 
> 
> Interesting that they could drive their own loop. I always assumed they needed an external loop supply.  
> 
> We’re the Model 14 reperfs that mounted on the shelf usually on the same loop or a different loop back in the day?
> 
> Paul

My M19 desk (which seems to match the drawings in the manuals I have, miraculously) has a 
bunch of separate circuits, as you note for the M14, for the TD, etc.  It looks like they 
could all be wired in a number of different ways. 

There's a three-position switch on the front of the desk that lets you switch between two
"external" circuits and a local loop powered off the REC-30 plus a big fat wirewound current 
limiting resistor. 

Everything seems to be brought out to screw terminals on the back so With jumpers and stuff 
I imagine you can create whatever arrangement you want.