Questions from Opto-Coupler Circuit
1. Remove one end of the resistor R-5. This shuts off the opto-coupler. What is the effect of this?
It should close the switch and therefore turn off the lights, but for some reason, my display would not light up at all...I checked all the connections and made sure they were just like the book, but I still could not get the display to light up while using the opto-coupler....When I connected the 330 ohm resistor from the displsy directly to the ground, the display would light up according to the switches....but when I tried to run the current through the opto-coupler, nothing would happen.
2. Change the settings of the binary switches and reconnect R5. What happened?
As I already explained, my display does not work, but I think the display should automatically light up according to the binary number you put the switches at.
3. Is this what you expected?
I can't try it, but yes, I think what I expect, will be what I expected :D
