On Saturday, March 23, 2013 at 10:16:06 AM UTC-4, mike wrote:
I have a Pace tweezer soldering iron. 21V
I have an Ungar 9900AS power unit. 24V
I'd like to mate them.
The 6-pin round connector plugs in...I'm afraid to turn it on.
I found some pinout info on Pace systems,
but nothing on the Ungar.

A schematic or pinout info would save me reverse engineering the
thing.

Thanks, mike

i have pinout of the output plug (no internal schemo), will soon post it.....