Residual magnetism reversing circuit for an electromagnetic clut

Resistive controller

Resonance field discharge

Resonant circuit which provides dual frequency excitation for ra

Resonant degaussing apparatus

Resonant degaussing for a video display system

Resonant power converter for energizing a coil

Rotating superconductor magnet for producing rotating lobed magn

Safety circuit

Safety circuit for a potentially dangerous machine monitored by

Safety control circuit

Safety control device for an actuator of the flap solenoid valve

Safety control system responsive to carbon monoxide smoke and th

Safety device for electrical apparatus containing a dielectric g

Safety floor and sweep with line power

Safety interlock system

Safety interlock system

Safety locks

Safety monitoring system for punch press operators

Safety relay