On the surface, a programmable logic controller (PLC ... device built under these specifications will be recognizable to control engineers and maintenance personnel worldwide.

In this quick Arduino tutorial I will explain how you can control a relay using the Arduino Board, one 1K and one 10K resistors, 1 BC547 transistor, one 6V or 12V relay, one 1N4007 diode and a 12V fan ...

To operate the transmitter, and especially to accommodate the vacuum-tube amplifier, older transmitters use relay logic, more typically known in broadcast engineering as a control ladder. Essentially ...

If your usual tools are the Arduino and the Raspberry ... you may find ladder logic a little frustrating. Originally, it was a documentation tool for relay logic but has grown to handle modern ...

Engineers and developers looking for a programmable logic controller (PLC) might be worth checking out the new CANADUINO Arduino MEGA 2560 ... and 20 Outputs (8 x relay 250V/5A, 2 x open-collector ...

Ladder logic uses switch or relay contacts to implement Boolean expressions ... Many times, momentary pushbuttons are used to provide user input to a control circuit. If such a switch is used as a ...

1, “PB” stands for pushbutton,”and “CR” stands for control relay. “L1” is a light, and “M1” is a motor. Fig. 1. Note how this electrical diagram resembles the shape of a ladder with two separate rails ...