McVitie Weston valve collection, S tube solid-state rectifier valve
S tube solid-state rectifier valve, enclosed in a cylindrical glass envelope with a standard screw cap, (RMW/A217 - McVitie Weston number), by Unknown maker.
S tube solid-state rectifier valve, enclosed in a cylindrical glass envelope with a standard screw cap, (RMW/A217 - McVitie Weston number), by Unknown maker.