This circuit using only transistors was obtained from Ferranti's 1969 documentation. It can be made from modern transistors. The circuit is 4 bits.
This Nixie pipe circuit was found in 1965 documentation. Note the high supply voltage. Appropriate...
This signal amplifier should be installed near the FM antenna to improve signal reception in...
Suggested by Siliconix documentation from the 90's, this circuit uses power MOSFETs according to the...