Half-Wave Rectifier
The 866 / 866A Vacuum tube is a Half-Wave Mercury-Vapor
Rectifier. It is used in power supplies.
The 866A tube is used in Workrite wood welder and wood glueing machines. They are used in Workrite Model 3000 and
4000 wood glue welders.
Electrical Data:
Filament Voltage .............................. 2.5 V
Filament Current .............................. 5 A
Preferred Substitutes ...............2XM600A, 866,
866A, CE-866, CV32, DQ2, GL866A, GU12, RG3-250A, RK866A,
VT-46A, 2XM600A