In 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 approach to troubleshoot the main power ...

The design of the circuit can be used to create a traffic light wherein twenty open collector that turns ON one at a time in a continuous sequential manner. The 74LSxx family of TTL integrated logic ...

Australia's NOJA Power has released Relay 1.9, an upgraded firmware platform for its OSM series Automatic Circuit Reclosers (ACR). Among other enhancements, the firmware now includes Negative Phase ...

Higher Capabilities for Safety-Rated Control Circuits A truly reliable safety control system must work even when some parts fail. Force-guided relays are unseen components that add another level of ...

To help achieve more precise control of gene therapy, engineers have designed a new control circuit that can keep gene expression levels within a target range. The method could be used to deliver ...

The Machine Primary Control Elements (MPCE) 1 and 2 are typically a relay with force guided contacts. When a safety interlock, light curtain, or e-stop switch opens a circuit, the MPCE NO contacts ...