The circuit is of the Motorola Linear Databook of 1990. The power source must be symmetrical and the characteristics of the circuit are given next to the diagram.
With this configuration it is possible to obtain an 80 dB gain from two 741 operational...
This is the common configuration for a 1 MHz crystal oscillator with a 7400. The circuit can...
This circuit with LDR and neon lamp has its operating frequency given by the light. The circuit is from...