The following project is an update of Gary D. Patterson’s “Simplified CTC signals” in the July 1988 issue of MR. Bringing the project up to date was a large endeavour. The block control project now ...

While addressable LED strips are all the rage, [Mike] from [mikeselectricstuff] has been working on an installation using the more basic two-wire strips that are simply controlled via PWM dimming. … ...

J.V.R. Safe-T-Signal has made its wide turn warning signal available in the new 7-diode Amber LED. The company offers the wide turn warning signals with 10- and 36-diode Amber LED lamps, all using ...

Figure 1 AC comparator with color-dynamic signal level indication. The comparator comparison inputs are supplied with voltages of opposite polarity and are regulated by means of a dual potentiometer ...

Protection features include over-temperature and input under-voltage lock-out. The AL5814 and AL5817 devices also provide ‘LED open’ protection via a V FAULT pin, as well as LED thermal fold ...

In this paper, a diagram illustrating the combined circadian effect and mesopic vision effect caused by cirtopic, scotopic, and photopic photoreceptors, i.e., a vision effect diagram, was established ...