Found in an EEE from 1970, this circuit supplies a voltage of 12 V DC x 10 mA current from the power grid. The NOR or NAND port used is TTL.
This 4.5 MHz oscillator, or according to the crystal, was found in American documentation from the...
This is the traditional configuration of an adjustable tone filter with the LM567. The circuit uses a...
This configuration was found in a 1976 publication. The outputs of the logic circuits are applied to...