GAVR-15A AVR Generatore Regolatore di Tensione Automatico Universale 15A 220V!
Thermal Drift: 0.05% per °C change in AVR ambient. In order to. prevent the AVR board from blowing up the tube and burning the board due to improper super-operation during the magnetization process. Resistance Min.10Ω Max.100Ω.