- Electronic generation equipment (18)
- Battery chargers, rectifying or nonrotating (11)
- Power conversion units, a.c. to d.c.: static-electric (1)
- Rectifiers (electrical apparatus) (1)
- Thermo-electric generators (1)
- Capacitors and condensers (2)
- Blasting machines, electrical (2)
- Static elimination equipment, industrial (4)
