Now this should be elementary, but I have an operational question regarding a series RC circuit. I have a small 12V Potter/Brumfield relay that I would like to make slow release by about 5 seconds. I figured I could use a simple RC circuit across the coils. I chose a 1Mb resistor and a 5uF...
This is pretty simple actually. I have a PLC that has a "light out" (LO) circuit that checks the filament of an incandescent bulb by intermittently pulsing the output. If there is no current draw, it sets a LO bit in the program.
I simulate the LO condition with an LED and a switch. I use a...
I am new to the forums and was wondering if there was anyone who did PLC type work for the railroad?
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James W. Hudgins, III
Southwest Signal Engineering Co.
www.swsignal.com
