This circuit was obtained from an American documentation of 1967. The circuit provides a 30 mA output current for driving standard Nixie indicator tubes at the time.
This circuit is from old American documentation, but the transistor used is still very common...
April 2017 - The Shields of Seed Grove Modules for Intel Joule can now be obtained from Mouser...
This photocell circuit was found in Radio Electronics magazine from July 1959. The transistor used...