Radio control security system for automobile doors, trunk and ho

Railroad track circuit vital relay control

Rain detector for automatic irrigation systems

Rapid response dual coil electromagnetic actuator with capacitor

Rapid turn-on, slow drop-out control arrangement

Reactive load drive and surge protection

Reader/writer and analog switching circuit

Reconfigurable multichip module stack interface

Reduced tensioning time for electronically controlled switch...

Redundant control relay circuits

Redundant power supply with a switchable, linear voltage...

Relay

Relay actuation circuitry

Relay actuator circuit and method

Relay apparatus

Relay circuit for controlling an inductive load

Relay circuit having a pulse generator for closing contacts

Relay circuit having a test switch and method of testing a relay

Relay circuit with cyclical controlled capacitor

Relay combination