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.
In the figure we show a configuration for a crystal controlled overtone oscillator using a...
This circuit, used in radio communication, converts CW signals and tones that allow you to follow...
The figure shows how to implement the AND function with a Norton LM3900 operational amplifier. The number of...