Resistor R 2 keeps Q 1 off as long as switch S 1 is open. R 1 limits the base current of Q 1 when S 1 is closed. S 1 can be a manual switch, a relay contact, an optocoupler, or a transistor. If you ...

Yes, an ECOS can be retrofitted to most any engine, even really old ones. These are readily available on the aftermarket. Check out T-H Marine’s Saf-T-Stop Kill Switches ($37, thmarinesupplies.com) ...

The second circuit is the ignition circuit. When the vehicle key is used to turn the ignition switch to the spring-loaded Start position, 12 volts are supplied to actuate the starter solenoid.

Getting a little more specific, a definition in Art. 430.2 states, “A controller is any switch or device that is normally used to start and stop a motor by making and breaking the motor circuit ...

Isolating problems in the control circuitIn Part 1 of this two-part series, we presented a 3-phase, 480VAC motor circuit with its associated controls (Figure). We stepped through a logical, systematic ...

Power is supplied from a three-phase source on the line leads, L1, L2, and L3. Protection against short circuit is required in every motor circuit. This protection, also called “branch circuit ...

GV2 are 3-phase motor breakers intended for motor control and protection, in line with to IFC 947-2 and IFC 947-4-1 standards. They are connected with screw terminals, and are operated with a rocker ...

SAIC Motor Corp Ltd's patent describes a bidirectional isolated communication circuit for differential signals. It includes detection circuits, isolation adjustment, and a watchdog circuit for ...