Found in a publication from the 50's, this circuit uses a germanium transistor of the time. The power supply is simple.
This circuit for light modulated in frequency (FM) operating at 50 kHz was found in a 90’s...
One of the most popular EPROM memories of the past is the 2716 2k x 8, whose pinout with practical use...
Found in a 2005 Linear Technology application manual, this circuit provides outputs from a current...