We found this circuit in an American publication from 1977. The circuit drives two LEDs according to the control of the inputs. The technology is TTL requiring 5 V to power supply.
This oscillator was found in the November 1986 issue of Radio Electronics magazine. The frequency...
We found this circuit in Motorola's Linear Databook in 1990. The integrated circuit used is no...
This circuit was found in American documentation from the 1960s. The operational amplifier is from that...