- Battery chargers, rectifying or nonrotating (22)
- Electrochemical generators (fuel cells) (4)
- Inverters, nonrotating: electrical (3)
- Power conversion units, a.c. to d.c.: static-electric (13)
- Rectifiers (electrical apparatus) (2)
- Thermo-electric generators (5)
- Capacitors, fixed or variable (3)
- Condensers, fixed or variable (1)
- Series capacitors (1)
- Blasting machines, electrical (3)
- Static elimination equipment, industrial (3)
