I'm trying to identify a transistor from an early '60s vintage radar
processor panel:
http://sturgeon.css.psu.edu/~mloewen/Oldtech/Panels/Budd-7L.jpg
The transistor is labeled "GT1890G052", and I haven't been able to find
anything on the web. They're apparently used to switch 3-lead neon
indicator lamps.
Mike Loewen mloewen at cpumagic.scol.pa.us
Old Technology
http://sturgeon.css.psu.edu/~mloewen/Oldtech/