6AL5 low voltage logic circuit

In this blog we will experiment with vacuum tube logic gates. We will be using low voltage so it is totally safe.

We will use a 6al5 twin diode tube. In the circuit below shows how to use it as semiconductors diodes but it’s very same as for vacuum tubes.

Simply wire positive and negative 5v through 6.3v ac or dc to the heaters. Use plate pins as the anode.

Published by Justin Roeder

I am an electronics engineer and computer programmer that has autism. I learned by myself

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