Converts 4 24 vdc PLC outputs to warning tower light (RGBY) to Display the alarm color codes 1/2/3/4
1 = A RED
2 = B GREEN
3 = A+B YELLOW (Red + Green)
4 = C BLUE
How to reduce the 24 volt signal to 2 volts ?
How to wire ...
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Decoder # 74LS48 for common-cathode (-)LED types
