That manufacturer made medium to top quality power packs for the hobby. The
2.5A capacity was not all that high for back then. About the time that semiconducter diodes came common in ampere sizes, the company died. It was also the same timeframe that all of the set makers started building their own power packs rather than buying them.-- Bob May
rmay at nethere.com http: slash /nav.to slash bobmay http: slash /bobmay dot astronomy.net