Although many electromechanical relays have been replaced by their solid-state cousins, they still have their place in electronic systems and they are still being manufactured. The early telephone ...

One of the frustrating challenges in integrating systems is interfacing an existing subsystem with a new or different subsystem. In cases where the input/output ...

This chapter covers representative general-purpose relays used in the control circuits of most industrial, commercial, and consumer products. Relay names and terminology are in accordance with ...

The cost of component failures continues to increase as electronic products become more complex. Most component replacement costs are associated with marginal devices that become intermittent or fail ...

Large scale digital logic began not with the vacuum tube but the electromechanical relay. Although vacuum tubes were available at the time – and were used on competing machines – Konrad Zuse chose to ...

Although they have been superseded in some applications by newer technologies, such as solid state relays, electromechanical relays (EMRs) still have a lot to offer. Of all the relay types, EMRs are ...

A line of general-purpose electromechanical relays comes in three mounting styles for use with motors that constantly cycle on and off. HD-1 relays are rated for 40A at 240 VAC/30 VDC, 1 HP at 120VAC, ...

Electromechanical relays can be manufactured with high-frequency RF characteristics that allow them to pass and switch signals in the 7-GHz range and beyond with the proper packaging. Two key RF ...

Menlo Micro has released another MEMS electro-mechanical relay, this time a single-pole four-throw (SP4T) dc-18GHz switch. MM5120 will handle 25W (150W pulsed), according to the company, though its ...

After seeing an exhibit of an old relay-based computer as a kid, [Simon] was inspired to build a simple two-relay latching circuit. Since then, he’s been fascinated by how relays can function to do ...