Operation circuit and power switching device employing the...

Operation confirming device for electromagnetic actuator

Operation control method for superconducting coil

Optical semiconductor relay

Output circuit having a fail-safe function

Parallel circuit for driving an electromagnetic load

Particulate-removal rapper-controller

Passive mass-spring type of sensing device having electronic dam

Passive tuned magnetic flux rate feedback sensing and control ar

Peripheral device power activation circuit and method therefor

Permanent magnetic retaining device to move, affix or carry ferr

Phase control switch apparatus

Phase detecting actuator

Photoelectric load control system

Piezoelectic relay module to be utilized in an appliance or the

Piezoelectric injector drive circuit

Polarity sensitive solid state relay

Polarized electromagnetic relay

Portable actuator for inductive load

Portable demagnetizer