Found in an ancient American documentation, this circuit can generate signals up to 40 MHz for a Z80, microcontroller widely used at the time. The circuit must be powered with 5 V and also serves as a shield.
This LCD driver circuit uses a common component today. The circuit is from 90's documentation....
This circuit converts signals from 0 to 19 kHz into voltages from 0 to 1 V. The circuit is from a...
This simple 555 component tester was found in the November 1992 issue of Radio Electronics...