Hivac XN3

The XN3 is a medium-sized Nixie tube manufactured by Hivac in Great Britain and Lorenz in Germany and part of their &lsquo;Numicator&rsquo; line of display tubes. According to its datasheet, it is the direct successor to the XN1 , featuring pin compatibility and primarily differing in its increased lifespan. Unlike many later long-life tubes, however, the XN3&rsquo;s discharge does not exhibit the…