SWITCHES AND RELAYS - Electrical Articles

Silicon Controlled Switch (SCS)

By taking the equivalent circuit for an SCR and add another external terminal, connected to the base of the top transistor and the collector of the bottom transistor, we have a device known as a silicon-controlled-switch, or SCS: <IMG src="/img/0 ...

3 Comments. 1209 views since Sep 29, 2008

Robots in Consumer Goods

While industrial robotics have been the mainstay of the automotive industry for many years, the use of robotics in producing consumer items is still on the rise. ‘‘Consumer production with robotics is a growing area,’‘ says Jarrell D. Sills, Sa ...

0 Comments. 810 views since Sep 28, 2008

Switch Types

An electrical switch is any device used to interrupt the flow of electrons in a circuit. Switches are essentially binary devices: they are either completely on ("closed") or completely off ("open"). There are many different types of switches, and we wi ...

0 Comments. 802 views since Sep 24, 2008

Networked Robotics

Robot networking, where multiple robots operate together in coordination with controllers, computers, and humans while working toward a common production goal, is a means to ensure efficiency and safety within a work cell. Ethernet connections usually ...

0 Comments. 771 views since Sep 28, 2008

Switches: Contact Normal & Bounce

Contact "normal" state &amp; make/break Sequence Any kind of switch contact can be designed so that the contacts "close" (establish continuity) when actuated, or "open" (interrupt continuity) when actuated. For switches that ha ...

0 Comments. 764 views since Sep 24, 2008

Protective Relays

A special type of relay is one which monitors the current, voltage, frequency, or any other type of electric power measurement either from a generating source or to a load for the purpose of triggering a circuit breaker to open in the event of an abnor ...

1 Comments. 736 views since Oct 1, 2008

Time-Delay Relays

Some relays are constructed with a kind of "shock absorber" mechanism attached to the armature which prevents immediate, full motion when the coil is either energized or de-energized. This addition gives the relay the property of time-delay actuation. ...

0 Comments. 682 views since Sep 26, 2008

Switches Contact Design

A switch can be constructed with any mechanism bringing two conductors into contact with each other in a controlled manner. This can be as simple as allowing two copper wires to touch each other by the motion of a lever, or by directly pushing two meta ...

0 Comments. 646 views since Sep 24, 2008

Relay

An electric current through a conductor will produce a magnetic field at right angles to the direction of electron flow. If that conductor is wrapped into a coil shape, the magnetic field produced will be oriented along the length of the coil. The grea ...

0 Comments. 633 views since Sep 26, 2008