Incandescent RAM - Refresh Circuit Proof Of Concept
Incandescent lightbulbs have an interesting effect where the warmer they are, the higher their resistance. Thus, by turning on a light, it heats up, its resistance increases... Then when you remove the power, its resistance slowly decreases as it cools.
Lightbulbs have "Memory!"
Can we use that?
This is a portion of my planned Incandescent DRAM Refresh/Read Circuit. It measures the resistance across the bulb then "refreshes" it.
You can see that after the bulb is "written" it retains its value for around half a second. So, imagine several bulbs gets swapped in and out of this circuit, in order to refresh the data bit stored in each.
There should be plenty of time to refresh several bits with these same two relays, so e.g. if they used this circuit in a computer built in the 1880's, they could reduce the relay count dramatically
Read my ramblings on it at: https://hackaday.io/project/162351