=>  What capacitors or resisters are best to hold the maximum AC 
output to 15 volts? 

You can use a bridge rectifier to drop the AC voltage by 1.6 volts 
and still get AC output by wiring it a special way.  The way the 
rectifiers work, they give a constant volt drop regardless of load.  
Resistors also give a drop, but its drop varies depending on the 
load, which is probably not desireable for what you want.  Also, you 
could add 2 bridge rectifiers in series to get a drop of 3.2 volts.

I did this with my 16B transformer to lower the 18 volt output of the 
fixed post.  I used a single 25 amp 50 volt bridge rectifier from 
Radio Shack (part 276-1185).  You need to bolt this rectfier to a 
heat sink or it will get very hot.

If anyone is interested, I could post a sketch of how this works.

John Gasal  




> 
> Staying on the NPSG branchline
> of NASG track, Glenn


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