OkiePC
Lifetime Supporting Member
Wow, I forgot about the t-bar relays. My former employer had one of those. Since it was a one of a kind, naturally we did not stock a spare and ended up putting in several "ice-cube" relays when it died.
It was used to select one of two different gray code encoders. We used relays with gold plated contacts since the signal was low voltage and low current. We had some on other applications with plug in relays switching drive analog signals and enable signals. The normal (silver) contacts would not last very long (tire plant with high sulfur atmosphere). The maintenance guys would put in the cheap relays sometimes for troubleshooting. Since they had manual operators and 10 amp contacts the guys thought they were better. It took several episodes of downtime to convince them that the gold plated 1amp contacts were superior.
It was used to select one of two different gray code encoders. We used relays with gold plated contacts since the signal was low voltage and low current. We had some on other applications with plug in relays switching drive analog signals and enable signals. The normal (silver) contacts would not last very long (tire plant with high sulfur atmosphere). The maintenance guys would put in the cheap relays sometimes for troubleshooting. Since they had manual operators and 10 amp contacts the guys thought they were better. It took several episodes of downtime to convince them that the gold plated 1amp contacts were superior.