Door operator safety feature requiring constant actuation to clo

Double solenoid linear motion actuator

Double-acting electromagnetic actuator

Drive apparatus and drive method for electromagnetic drive...

Drive circuit for a latching relay

Drive circuit of switch and relay circuit

Driving apparatus of vibration type actuator

Driving circuit for printing device in electronic cash register

Driving device for door lock-actuator

Driving method and driving apparatus of a solenoid and...

Driving method of electromagnetic valve, electromagnetic...

Dual current sensing driver circuit

Dual current sensing driver circuit with switching energization

Dual fault tolerant actuator control system

Dual frequency narrow-band frequency modulated keyable control c

Dual protective relay for power systems

Dual switch control system