I have an unhealthy obsession with vacuum tubes, but I'm terrified of high voltages. Low voltage tubes it is then!
This user joined on 10/29/2020.
I build a lot of projects on breadboards, but this was my most recent. It's a full adder using four 6DJ8 dual triodes. It looks like chaos, but it works rather well!
Once I figured out how to build a proper flip flop with tubes, I really wanted to build a display piece that could sit on my desk. This was the result.
Taking what I learned in the 10-bit calculator, I wanted to make something with a bit more readable display as well as test out building the individual components of the calculator on removable cards.
This is a calculator that adds or subtracts to 10-bit binary numbers and is made out of just relays, capacitors and resistors.
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