Hello! Haven't seen me in a while, recently been furiously workin away at the clock. I have gotten the clock portion of the circuit working! Hurray! Thanks to your guys's help
So now the Nixie tubes are in as well as the 74141 chips to drive them. I also have built my high voltage power supply. So other than piecing things together, I need to calculate the resistor needed for my nixie tubes.
I have seen this thread:
http://forum.allaboutcircuits.com/showthread.php?t=61402
That talks about a little bit of a different problem though.
Using the calculator here, or basically just using ohms law, I find using a 180v to power the tube at 170v I need a 4k resistor.. That doesn't seem right, usually nixies are using like 10k-40k though right? Hmm..
I also noticed that after igniting the tube could stay on even at 135v where as it states minimum is 170.
But anyway, I want to figure out how to properly do it. If I have exactly 180v coming from my power supply, what resistor do I need on each anode? Or how can I find out
So now the Nixie tubes are in as well as the 74141 chips to drive them. I also have built my high voltage power supply. So other than piecing things together, I need to calculate the resistor needed for my nixie tubes.
I have seen this thread:
http://forum.allaboutcircuits.com/showthread.php?t=61402
That talks about a little bit of a different problem though.
Using the calculator here, or basically just using ohms law, I find using a 180v to power the tube at 170v I need a 4k resistor.. That doesn't seem right, usually nixies are using like 10k-40k though right? Hmm..
I also noticed that after igniting the tube could stay on even at 135v where as it states minimum is 170.
But anyway, I want to figure out how to properly do it. If I have exactly 180v coming from my power supply, what resistor do I need on each anode? Or how can I find out