Vintage Heathkit Variable Isolated AC Power Supply, Model IP-5220, 0 - 140VAC With Isolation, Made In USA, Circa 1975 - 1983 | Vintage electronics, Vintage, Ac power
1420 Variable AC Power Supply - Global Spec | Mouser
BK PRECISION 1653A VARIABLE ISOLATED AC POWER SUPPLY 0-140VAC 0-2AAC | eBay